Batteries schmatteries. Electricity shmelectricity. Who needs modern energy sources when you can have scalding hot steam to power your gadgets? This unique robot from Germany gets its juice from good old H2O. Strenco’s ST-2 Steambot lumbers along thanks to a tiny copper Wilesco steam engine that’s been implanted in his chest cavity. Now don’t expect to just flip a switch to get this retro robot going.