If your house is anything like mine, then you are going through batteries as fast as you are diapers. Between the toys, vibrating chairs, mobiles, entertainers and monitors, we have had a battery charger going constantly for my daughter’s 14 months. And no matter how many we have on hand, there seems to always be a toy whose batteries are on their last legs, leaving the little creature with that flat, robotic music or lights that only barely glow. So this holiday season, we decided to go battery-free! No plugs, no switches, no lights. Some of the best classic toys and modern trends run on pure kid-power.