Mini Challenges!
New inventive challenges posted each week
111
Good day
Invent something to cheer you up when you’re having a bad day
Check out some other challenges
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549
Heat
Invent a device that generates heat
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
548
Lucky
Invent a way to turn your luck around
222
Stair chair
Invent a wheelchair that can go up and down stairs
138
The sun collector
Invent a way to charge a device using energy from the sun