PVC tool holder/caddy (this one's used in my stained glass studio). Made from lengths of PVC pipe attached to MDF with screws. Each piece of PVC was angle cut at one end so the screw was easily. Garage storage or inside utility cabinet doors?
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