Tape Clamp, The Gift Wrapper's Assistant - Gifts - this company is sold out, but maybe a handy person can make one with items from the hardware store. --or just get a weighted base tape dispenser from the stationery store.
5-in-1 Container Opener - Remove screw caps ranging from 1" to 3-1/2" in diameter. It can also be used effectively on the much-cursed press-down-and-turn child-proof caps on drug containers. In addition, it has a standard bottle opener and a built-in lever for opening cans with a pull loop on the top. The fifth use is to cut sealed plastic food containers.