Mini Challenges!
New inventive challenges posted each week
432
Help a friend
Invent something to help a friend
Check out some other challenges
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83
Sunny side
Make a sunburst cardboard sundial clock
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
548
Lucky
Invent a way to turn your luck around
396
Protect animals
Invent something for animal conservation
103
Under pressure
Invent something that can reduce stress