Much like a rolling blade with a handle for cutting fabric combined with the blades of children's cutting scissors, it would cleanly and easily open any type of gift wrap or box or tape or ribbon which could be recycled for later use by cutting rather than ripping. This would reduce the amount of mess on any given Holiday by not having a lot of scraps to pick up afterwards amongst other problems. Also, it is almost always practically impossible to get at your gift through all the packaging, so we just roll the blade over the packaging (of whatever kind) and it cuts open without effort and not damaging the gift. They could be given out taped to the gift. The general design is just a child safe rolling blade and a handle (of any color) taylored for cutting certain materials since fabric cutters won't do it. The handles could come as a child would want it such as animals (also prehistoric) or cartoons or whatever the kids like these days.
Reward: A packaged gift (of your choice) and an opener.