Mini Challenges!
New inventive challenges posted each week
Check out some other challenges
PrevNext
517
Space helmet
Design a super space helmet!
138
The sun collector
Invent a way to charge a device using energy from the sun
490
You've got mail!
Invent a new way to deliver mail
187
5-a-day
Invent a tool that will help you to get your 5-a-day
449
Solar equipment
Draw a piece of equipment which is now powered using solar energy instead of electricity