Trash bag dowels
Rolled up trash bags are notorious for rolling into the back of the cupboard and unfolding into a mess of plastic when not in use. Believe it or not, there is a simple solution to this annoying problem: simply install some dowels underneath your kitchen cabinet and slide your roll of garbage bags onto them.
That way, not only will they be out of the way, but they will also be easily accessible when you need to replace the used bags. Just pull on the bit of the bag hanging down and it will roll right off, ready to be pulled from the roll and used.