A BBC Wales project to find out what new laws people would like the Welsh assembly to bring in has received more than 200 suggestions in its first week.
If I Ruled Wales will put forward one idea for AMs to consider
The ideas sent in to If I Ruled Wales range from banning the sale of houses as holiday homes, to providing free school transport for all pupils.
The assembly's new powers mean anyone can suggest an idea for a new law.
If I Ruled Wales will pick one idea, sent in by e-mail, phone or post, and pass it on to AMs for consideration.
The assembly's extended powers under the Government of Wales Act mean anyone in Wales is entitled to put forward their idea on how those powers should be into law.
The ideas can come from anyone, of any age, as long as 10 people back the proposal.
Nick Horton wants adults to be registered as bone marrow donors
According to the assembly's website, all admissible petitions will be referred to the relevant committee.
Nick Horton, from Porthcawl, is in training for a trek to Everest base camp later in the year, raising funds for the Anthony Nolan Trust, which helps provide donors for people who need bone marrow transplants.
He thinks the assembly should make it compulsory for adults in Wales from 18-45 years to have a blood test and join a register for potential bone marrow donors.
He said: "That way, it would be much easier for somebody desperately needing a bone marrow transplant to survive, to find a good tissue match.
"Then the best matches could get invited to voluntarily donate their bone marrow or even peripheral stem cells and have an opportunity to save someone's life."
Robert Evans, a market stall trader in Llangefni, is one of many who voiced concerns about the environmental impact of plastic shopping bags.
He said: "I take my own cloth bag with me to the supermarkets. [The idea has] been tried in Ireland since 2002 and it works very well there."
Others suggestions include a call by the Welsh Canoeing Association for public access to inland waterways and a petition by people in Carno, Powys, for the railway station there to be reopened.
Robert Evans is one of many calling for cuts in the use of plastic bags
BBC Wales' If I Ruled Wales wants more people to get in touch with their suggestions on the laws they want to see implemented.
The suggestions to the month-long project will be scrutinised by a panel of experts who will decide on the best ideas which have a real chance of becoming laws.
The winning submission will be chosen by the audience, before being handed to the assembly's Presiding Officer, Dafydd Elis Thomas, for consideration.
People can send in their own ideas to If I Ruled Wales.
By post, the address is: Betsan Powys, BBC Wales Political Unit, Llandaff, Cardiff CF5 2YQ.
The If I Ruled Wales phone line number is 08703 500 700 (Calls from a BT line cost up to 8p per minute (some operators and mobiles vary) and may be recorded for training.
Ideas can also be received by e-mail to IfIRuledWales@bbc.co.uk