Mini Challenges!
New inventive challenges posted each week
237
Green turtle eggs
Invent a device to help keep a green turtles egg cool
Check out some other challenges
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538
Barbie car
Design a Barbie convertible
501
Smile!
Invent something to guarantee a smile
311
Spring clean
Invent something to help you with spring cleaning
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
75
Musical chairs and things
Design an object in your home that can also make music while you use it.