This low-cost sleeping-bag keeps infants warm for between four to six hours, and once it cools down it can be plugged in or submerged in water for 20 minutes to heat up again. Not while the baby's still inside, mind.
Designed for developing countries where homes are not centrally-heated and children can't afford the luxury of electric blankets, the wax-filled heating pouch has a nylon outer (which gives it that FedEx look which is so hot right now) and can be easily carried by parents. It's aimed at India for now, but if successful will be rolled out to Asia and Africa. [Embrace Global via Core77]