If you tied all the plastic bags used annually worldwide end to end, the chain could circle the Earth 63 times. You can keep 1,200 plastic bags out of the landfill each year by using reusable bags. Always forget your bags? It’s easy to break your disposable-bag habit by carrying one that can be folded into a pouch small enough to fit in your purse or pocket. We like ChicoBag’s rePETe line, made of 99%-recycled materials ($12.99 chicobag.com).