Mini Challenges!
New inventive challenges posted each week
501
Smile!
Invent something to guarantee a smile
Check out some other challenges
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67
Waste not
Invent a way to help people waste less food.
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
548
Lucky
Invent a way to turn your luck around
304
Birthday bash
Invent something to help you throw the best birthday party ever!
167
Festive games
Invent your own festive game