This is one of those clever. So simple, too! Use a kitchen paper towel holder for your garbage bags in the garage. Kitchen garbage bags could be placed on one of those upright paper towel holders for under the sink storage.
To hold a lot of pliers, it's easiest to just hook them onto the edge of a piece of wood. The piece of wood in this holder is tapered towards the top edge, so that it doesn't force the handles too far apart