Using them for smaller trash cans is one of the ways we use the plastic bags from the store. they are also useful for travel; you can pack away everything and know where it is (vitamins in one bag, Prescriptions in another.) I take a few when we travel to put wet bathing suits and dirty clothes.
The stores in our area used to give you a five cent credit when you brought in your own bags, but they're not doing it now.
