Upload ideas!

Mini Challenges!

New inventive challenges posted each week



Invent a machine that recycles your leftover dinner
Random challenge

No time to waste

Did you know that 1 third of all food produced globally goes to waste? Will your machine sort through the food and make a new meal ready for tomorrow? Or will your machine show you what food you can use as composte to help your plants to grow? Leftover food actually has a lot of uses and many people make sure they never waste any food - not even the skin of bananas! How will your machine save food waste?

Want to find something specific?
See all challenges
Subscribe to our Mini Challenges emails
Send your own challenge for us to consider and publish
Submit your own Challenge

Leftovers Ideas