Using old plastic bags

Rosalie inadvertently invented a pretty good invention many years ago when she cut a hole in the bottom of a trash bag and stuck our boy's head through it before giving him a hair cut. Somehow the bag got charged with static electricity and the falling hair stuck to the plastic.

We weren't sure how the thing got charged in the first place, but likely it was done by walking over a carpet while holding the bag.

Folks nowadays are inundated with plastic bags, fer sure. Seems there ought to be a bunch of ways to use them productively. Some of them that I've used in the past are to tie tomato plants to stakes, same with small trees; also placing them at the base of plants to keep the weeds down while retaining moisture and warmth in the soil.

Tell us about ways you employ these things for economy and convenience.