Mini Challenges!
New inventive challenges posted each week
216
Nature energy
Invent a gadget that produces sustainable energy using nature
Check out some other challenges
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44
Double up
Join two different things together to invent a new thing
83
Sunny side
Make a sunburst cardboard sundial clock
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
461
Cartoon character
Invent your own cartoon character
103
Under pressure
Invent something that can reduce stress