Now there's an even better way to recycle your plastic two-liter bottles. Instead of taking them to the curb, just connect one to the Audubon Soda Bottle Bird Feeder ($15). Hang the sturdy cast zinc adaptor from a tree or pole, and you've created an economical, squirrel-proof bird feeder, satiating the neighborhood birds for months. It's gentler on the environment, and the birds will remember your kindness. Because you never know when that flock might turn on you.