Not sure if this question fits into this section or not... Due to our impending cold winter months I've been contemplating buying one of those baby sleeping bags or grobags. Looks like a great idea, but I'm wondering how it'll work when my lo tries to stand up in his crib, how safe that is. He always looses his blankets and his room is unfortunately on the cool side, so aside from a plug in (expensive to run) heater, this was my other option for keeping him warm. Plus they're supposed to be better for preventing SIDS. If anyone has used one and has any feedback I would appreciate it. Thanks!!