Cheap green tip: use cereal box liners instead of zippable plastic storage bags

Since I stopped getting plastic bags at the grocery store, I started saving the plastic bags I obtain from other things, such as loaves of bread, bags of produce, etc. I find that if I need to throw trash away or have a plastic bag available for say, packing shoes or carrying a child's wet clothes, these work just as well as plastic grocery bags.

However, one of my favorite (plastic? wax?) bags to save and reuse are the ones inside boxes of cereal. These make awesome substitutes for zippable plastic storage bags. They're strong and waterproof, and usually can be reused longer than plastic storage bags, which tend to break down after two washings. I use them for such things as storing leftover pizza, pancakes, and chicken. Smaller cereal inserts can be used for such things as sandwiches. These bags do well in the freezer, too. To use, remove the bag after finishing a box of cereal, shake out the crumbs, and seal with a chip clip, twist tie or rubber band. Because they're waterproof, damp foods store well without leakage. Of course, since they don't seal completely, you can't use them for anything completely liquid. Otherwise, however, they're an excellent alternative to plastic storage bags.