The MudWatt kit from KeegoTech is an educational DIY kit that can teach kids about soil chemistry, microbiology and electricity. By combining ordinary dirt from your yard, along with scraps from your refrigerator, kids can create a fuel cell that will light up an LED. The MudWatt set is priced at $44.95 and can be expanded with other accessories such as a hacker boards for even more learning fun.
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