Mini Challenges!
New inventive challenges posted each week
189
Cell talk
Invent a new way for cells to talk to each other
Check out some other challenges
Prev![](https://www.littleinventors.org/media/image/f34b95e55-14e7-c3ac-f701-20ffe06e0dd2?cts=1721229498)
![](https://www.littleinventors.org/media/image/ffbebeec4-ea8b-c162-f701-e0e0e6c8c7de?cts=1721229498)
![](https://www.littleinventors.org/media/image/f20df73ad-e467-c207-f701-5032e40cbec3?cts=1721229498)
![](https://www.littleinventors.org/media/image/f120af9c6-1963-c637-f801-70cedbcf2626?cts=1721229498)
Next
138
The sun collector
Invent a way to charge a device using energy from the sun
251
Piggy bank
Draw an invention that would help you to save money
1
Keep your distance
Draw an invention to keep people two metres apart
549
Heat
Invent a device that generates heat
103
Under pressure
Invent something that can reduce stress