Johnco: Salt Water Spider

Build your own creepy-crawly robot—powered by salt water! This eco-friendly spider scuttles to life with just a few drops of salt water, no batteries required.

A fun and educational introduction to clean energy, this innovative kit lets kids explore how fuel cells work while assembling a spider that moves in a surprisingly lifelike way. It’s a hands-on way to learn about sustainable technology and alternative energy sources.

For Ages 8yrs+