If you've got baby number two (or three, or four . . . ) on board, the last thing you want to do is start from scratch when it comes to stocking up on all of the requisite gear. Strollers, car seats, high chairs, and even clothes are expensive, and they're only used for such a brief window of time. Scroll through for our comprehensive guide to the smart, safe, and savvy way to upcycle your own baby gear.