Mini Challenges!
New inventive challenges posted each week
299
Leaf it out
Invent a way to keep leaves off the train tracks
Check out some other challenges
Prev
Next
28
Flight of the bumblebee
Design flying machines inspired by birds and insects
387
Space travel
Invent a new way to travel in space!
144
Catch a shooting star
Invent a way to catch a shooting star
457
Sky display
Invent an alternative to a fireworks display!
549
Heat
Invent a device that generates heat