Adults shouldn’t have the only eco-friendly fun. Green toys and eco-friendly stuffed animals are quite common for babies and little kids, but what about the older kids? Race in a Case portable slot cars of course!
Slot cars have always been one of my favorites, and while I doubt they use that much energy to begin with, these don’t use any at all! Similar to those crank flashlights, the more you crank, the faster they go around the track. With enough racing (and cranking), maybe your kids will grow up to be professional arm wrestlers!