A massive Dalek, a set of gold teeth and a Bengal kitten were just a few of the odd items people left behind in hotels last year.
In one hotel, staff found a whooping £10,000 in one of the room's bins!
So we want to know if you have ever lost anything on holiday? Have you ever left something somewhere by accident and not been able to find it again?
Perhaps you've left you're favourite jumper by the pool? Or are you super careful with all of your stuff and keep it near at all times?
Whatever it is, we want to know!
These comments are closed for the weekend, but they will reopen next week.
"Once I lost my doll when we were on holiday!"
Eva, 8, Hampshire, England
"I lost my really precious phone the other day which was worth nearly £100! When I found it, it was charging behind the sofa and was on silent!"
Leah, 10, Sussex, England
"I lost a £10 note on the tube in London once!"
Rose, 12, Bristol, England
"I once lost my iPod when it was only two weeks old!"
Savannah, 12, London, England
"I lost my £300 paintball gun and £45 mask while at home and didn't find them for a whole month!"
Manon, 12, Wales
"I lost my Maths homework!"
Jack, 14, Hertfordshire, England
"The worst thing I've ever lost is my Blue Peter badge! I still can't find it!"
Charlie, 11, London, England
"I lost my safe keys which had £200 in it along with my favourite hat. My mum had the spare keys, but they got lost as well!"
Erin, 11, Wales
"At the age of 8, I dropped my GameBoy as I was swapping car seats in a service station in Kent. I never found it again!"
Eloise-Amy, 12, Hertfordshire, England
"The worst thing I've ever lost is my silver and diamond locket that I got in 2009 for my 10th birthday!"
Anjali, 11, Leicester, England
"I lost my camera up a mountain and we walked up and down the same path about four times looking for it before we found it!"
Jack, 10, Hertfordshire, England
"As a class we have lost a laptop, gold chain, Blackberry phone, PSP, Nintendo DS, two LG phones, a Nokia phone, memory stick, mum's ring, £153.02, a Kinect, library card and 30 pairs of socks!"
Year 8 class, 12 & 13, London
"I once lost my purse in town whilst shopping! Luckily I found it because it had £80 in it!"
Maria, 10, London, England
"I've lost my £800 phone before and never found it!"
Shanice, 14, Worcestershire, England
"I lost my purse which had £10 in it!"
Amma-kay, 10, London, England
"I lost my favourite pair of shoes. I've been trying to find them for ages!"
Meliisa, 9, Bradford, England
"I've lost my diamond ring which cost £50!"
Maryam, 9, London, England
"I lost my Nintendo Ds because I left it on the bus. I was really upset! However, a few months later I got a black Nintendo Wii and was so happy!"
Katy, 11, Liverpool, England
"I lost a Nintendo in 2009!"
Nellie, 8, London, England
"I lost my favourite soft toy, a bunny, when I was only 4! Her name was Flopsy, and I still miss her!"
Tegan, 10, Pembrokeshire, Wales
"Once I lost my PE bag, I forgot where I put it."
Shafiur, 11, London, England
"I once lost my wallet containing £20, and I left one of my favourite shoes in another country."
Shakila, 11, London, England
"I lost my gloves on the bus and I never found them. For that whole day my hands were freezing."
Nazrana, 10, London, England
"I've lost my PE kit on the bus before."
Nazia, 10, London, England
"I lost my purse which contained 50 pounds! I was soooo upset because I was going to buy a present for my sister!"
Maisha, 10, London, England
"I once lost a diamond watch. I was really upset because it was very special to me but when I came home I found out my mum was wearing it!"
Aniqa, 10, London, England
"I lost my £20 and I never found it again. My dad screamed at me."
Tom, 13, Los Angeles, USA
"I lost a whole bag of toys in America when I was 7."
Jadid, 11, London, England
"Once I lost my favourite pearl bracelet. I was sad because my cousin gave it to me."
Yesmina, 10, London, England
"I once lost some photos on my camera - I was very upset because they were so special to me and I know I will never get them back!"
Rebecca, 12, London, England
"I lost my phone at my best friends house, I left it on the bathroom floor and the worst thing ever- her dad found it!!"
Bethany, 14, Birmingham, England
"I lost my Gameboy on Christmas day, the day I got it."
Kai, 13, Birmingham, England
"The worst things I have ever lost were my recorder and my pandora bracelet, it had the nicest charm on it."
Morgen, 13, Co. Antrim, N. Ireland
"I lost a telescope."
Ellyson, 6, Shropshire, England
"One time I lost my teddy bear and because I was so upset my mummy took me to KFC to cheer me up. The cashier asked me what's up and I said I lost my teddy a couple days before. He had a look through the lost & found box and pulled out my teddy! I still have him now and I was eight when I lost him."
Melissa, 12, London, England
"The worst thing I lost was favourite stuffed animal Melvil!!"
Alexa, 10, Virginia, USA
"I lost my mum's ring and I got the blame."
Michael, 9, Stirling and Falkirk, Scotland
"I lost a bag full of very expensive clothing and it also had the receipt in it so anyone could have returned it and got the money!"
Farahat, 12, London, England
"Well... I lost my Nintendo DS and my mp3 player but I found them in the end!"
Zulaikha, 13, Dudley, England
"When I was little I lost my tape player and recording mic. I was so upset because I knew where I had lost it but we couldn't go back as it was a long way away."
Ellie, 14, Essex, England
"I've lost my PSP!"
Chrissy, 10, Glasgow, Scotland
"I lost my favourite Playstation game when I was 5 and I only found it last year!"
George, 11, Cheshire, England
"I took my watch off for PE at school, and hid it in my bag. I was looking for it for over three weeks, and it turned out someone had been snooping around, but luckily, someone else had seen so I got it back. I am so glad."
Saskia, 9, London, England
"I've lost a set of really expensive art equipment! My mum is really angry at me, but I'm sure it was on my desk the last time I saw it!"
Chloe, 13, Bridgend, England
"Well my friend gave me a bracelet made of special beads and I took it off to go swimming and left it at the swimming centre."
Yasmin, 12, London, England
"I lost my cat but he came back, unluckily with a broken hip."
Emily, 11, Cumbria, England
"I lost my handbag with my phone, wallet, and make up!"
Rachael, 10, Buckinghamshire, England
"Well, I went to Ibiza in Spain and lost my iPhone! Luckily we found it. I also lost my ball in the sea. I want to know where it is now!"
Tiegan, 12, Lancashire, England
"I lost my Wii, but it was only under my bed!"
Lewis, 11, London, England
"Well it wasn't on holiday, but my auntie lost my favourite teddy once. I had that teddy from when I was two so I was really upset. I have never left anything behind."
Megan, 10, Belfast, N. Ireland
"The worst thing I have lost is a torch."
Scott, 9, Surrey, England
"I left my dog behind once, it was terrible!"
Katie, 7, London, England
"I once lost my family in a gas station in Germany and they almost left without me! Whooops!"
Lizzie, 12, Brussels, Belgium
"Just before Christmas I lost a nice silver watch at a bus stop. Someone got a nice Christmas present, didn't they?"
Natalie, 13, Essex, England
"I lost a football."
Joseph, 11, London, England
"I lost my whole PE kit at school once."
Daisy, 12, London, England
"I lost a book at a hotel on holiday."
Ellen, 11, Manchester, England
"I left a cashmere scarf on a bench once and I only remembered at the last minute!"
Emma, 13, Powys, Wales
"I remember losing my Happy Street toy man! I found him though and I've still got him!"
Brambley, 11, Cambridge, England
"I was on the bus and lost some bread I was taking for the ducks, but when I went back home it was the same bus and the bread was still there!"
Olivia, 12, Wiltshire, England
"I lost my fave teddy bear and I can't sleep without it."
Flik, 6, Nottinghamshire, England
"Once I lost my fave thing, my DS - how sad!"
Sara, 10, London, England
"My sister's birthday present. It cost a lot of money!"
Abigail, 11, Sheffield, England
"I left my teddy in France while on a school trip."
Sophie, 14, Merseyside, England
"I lost my first toy - it was a doggy - never found it."
Megan, 8, Derbyshire, England
"I lost my phone and it was so hard to find because it was on silent!"
Emily, 11, Hertfordshire, England
"I lost my phone when I was playing football - oops!"
Ali, 13, UK
"I lost a watch from my granddad, which I'm still sad about, along with some mittens, gloves and hats!"
Emily, 9, London, England
"The worst thing I ever lost was my Nintendo DS! I thought we left it at the hotel but it was at home and our journey was delayed by three hours!"
Hannah, 12, Worcestershire, England
"The worst thing I lost was my phone!"
Harry, 12, Worcestershire, England
"I've lost my travelcard five times, as well as my mum's favourite necklace. I've also lost my boyfriend's phone in the past!"
Chaz, 14, London, England
"I lost my watch once!"
Emily, 9, Cambridgeshire, England
"I once lost my favourite purple spade on the beach in Spain in the sea. I wonder where it is now?"
Issy, 11, London, England
"I once lost my Miley Cyrus guitar pick that I waited months to get!"
Rebecca, 12, Lancashire, England
"I've lost lots of hair bands and I keep on losing them!"
Aleksandra, 8, London, England
"The two most precious things I ever lost were my teddy and my phone. Luckily I found them again!"
Rahila, 10, Middlesex, England
"I left behind my Gucci shoes in KFC after I got them!"
Ava, 12, Glasgow, Scotland
"The worst thing I EVER lost was my phone. It happened the other day!"
Christie, 11, Surrey, England
"I lost my brother in the supermarket once!"
Rosie, 13, Birmingham, England
"I lost my dog and it took me a week to find him! It turned out he was in the garden shed all along!"
Chad, 14, Birmingham, England
"I left my mobile at a hotel and when we got back we had to find it! Ooops!"
Lucie, 13, Blackpool, England
"I once left my favourite teddy behind on the bus, so me and my mum went to the next bus stop to get it back!"
Beca, 10, Wales
"The worst thing I've left behind is some money (£5) in the park, but I couldn't go back to the park and get it because it was too dark!"
Shahbaz, 10, Manchester, England
"I've lost loads of stuff before such as my teddy and phone!"
Megan, 11, Manchester, England
"I lost my diamond necklace!"
Zoey, 8, Cambridgeshire, England
"I've lost loads of things! I lost a charm bracelet last year and a couple of years ago I lost my mobile phone! Just a few weeks ago I also lost my Nintendo Ds! Oh gosh, whatever next!"
Sienna, 13, Galsgow, Scotland
"I lost the teddy that I'd had since birth at McDonald's!"
Jake, 12, Cornwall, England
"When I was on holiday I lost my lush designer sunglasses!"
Kayleigh, 11, Wiltshire, England