More on freezer bags

If you buy chicken breasts in those heavy duty plastic bags, save them. Wash them out and dry, then package things to be frozen in bread sacks or other lightweight free bags, then put them inside the heavy bag that held chicken. Your food will be safe from any possible contamination (washing the bag well with soap and water should remove contamination anyway), and you'll have the benefit of a very good quality freezer bag.

More "free" freezer bags

Do you ever eat potato chips that come in air tight bags? (Almost all do.) Reuse them as freezer bags. Smooth as much air out of them as you can, then fold each corner inwards, then fold the triangle point down a couple of times. They keep food as fresh as plastic freezer bags.

"Free" freezer bags

Do you buy frozen vegetables? Save and wash the bags they come in... they're freezer bags, right? Since they've held frozen vegetables, they're very easy to wash - a good swish in soapy water, a rinse, and you're done. To freeze things in them, close them with a twist'em tie or rubber band and write the contents with a marker.