Put your thinking cap on, it's National Ideas Day. Test yourself on the innovations that have changed the way we live - and some of those that haven't.
Ideas UK, the organisers of National Ideas Day, wants businesses to use the event as an opportunity to involve employees in improving the workplace.
And the Global Ideas Bank suggests the day should also be a time to recognise the unsung heroes of what they call social innovations - movements and organisations, rather than gadgets, that have made a difference to our lives.
Are you in tune with those eureka moments that shape our world, or oblivious to bright ideas?
Got a bright idea that might just change the way we live? Let us know, using the form below.
Some of your suggestions so far:
Lightbulbs that dim automatically when there's no sound in the room - to save energy.
Dom, London, UK
A chemical that reacts with dog-dirt and emits a harmless but very loud BANG. This could be sprayed onto roads, pavements and children's play areas.
Dog-owners would soon learn to control their dogs' lavatorial habits.
Tony Gardner, England
Double-sided no-seam socks. How much time is wasted in total by everybody who has to turn socks inside out? It really bugs me!!!
Sean, Scotland
Edible packaging, to solve the need for recycling!
Bob, London, England
Downloadable emergency vehicle sirens, which you would blast from your mobile to force people to get out of your way when you are in a hurry to get somewhere
Raphael Channer, uk
Get fast-food outlets to sponsor litter bins outside their doors - in return for money to maintain and empty the bins, they get a branded presence on the streets. This might also encourage customers to dispose of their waste properly, by connecting the idea of their bags and wrappings with litter bins.
Sarah Bowyer, Reading, UK
Bio-degradable packaging for supermarkets and fast-food outlets.
Elliot, England
A rural public transport text messaging service - if your ride is delayed, then a text will be sent to you. Would save half an hour in the cold if you knew the bus had broken down in Newmarket.
Serena Snoad, England
As well as rubbish bins on the street, recycle bins should also be provided for unwanted newspapers, empty bottles, cans etc. Only non-recyclable waste should be put in normal bins.
Leander Garrard, UK
Long-term birthday cards - instead of buying a card every year, one with 20 annual spaces to write a message. The sender encloses a SAE for the recipient to return it to them, and the same card is used the next year. Save trees, save time, effort and money, and build up a lovely picture of long-term friendship.
Fiona, Scotland
Long-term (6-24 months) shelters where homeless people could be accommodated. This would provide them with an address with which to apply for benefits, jobs etc. Could also supply free training courses, drugs/alcohol/abuse counselling etc.
Daniel Carfax, UK
A national public transport bus/rail/ferry pass which allows us to travel anywhere in England and Wales on any form of public transport, any time, any place.
AD, UK
A quiz and games radio station for those long arduous car journeys
Jon, England
A £300 tax on all new cars. When the car comes to the end of its life the person taking it to the scrap yard claims £200 rebate and the scrap yard get £100 for recycling it.
Kieran Boyle, England
Someone ought to invent instant screens - about 6ft high - which police could put round car crashes the moment they get on the scene. At a stroke it would eliminate rubbernecking - the major cause of hold-ups when there's been an accident. (And it would save everyone from feeling guilty after they looked to see what everyone had been staring at.)
Bibby Binky
Rear view mirrors at cash points. You would then be able to see if anyone was acting suspiciously behind you.
Kip, Norwich, UK
How about a sticky, flat surface mounted on shopping trolleys, on which shoppers can temporarily fix their lists and tick off their purchases as they go round? It's irritating having to carry your list around with no hard surface to write on.
Andy Coghlan, England
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