Need Project Ideas for 4-H SET

Hi, I am a third year project volunteer with 4-H and looking for ideas on what our next years project theme should be, So far in year one we did robotics (vibrating bots, BEAM, Legos, and underwater ROVs). In year two we did mechanical devices (solar cars, catapults and compressed air rockets). Any unique ideas for our 7-12 year old age group is encouraged. Info on our activities are here.

barrycdog5 years ago
try a Water Rocket using a pump. And also a mentos and diet coke project