Magnets! What a great idea:
Tape guns are great when you can find them. The packing bench is usually a very busy place with papers, labels, boxes, paper clips, pens, markers, tape, etc. Guns get buried and/or lost.
On a local delivery I noticed a customer that had magnets mounted on the packing benches and tape guns stuck to them. I liked the idea so much we even installed magnets at our packing benches.
After using the magnets for a few months I decided to offer magnets to our customers.
To install, either find a hole, or drill one. Bolt in place and stick the gun on. Pallet racks and most shelving units also have pre-made holes for mounting the magnets.