Consider how difficult it is to add keys to a standard keychain. Now imagine doing it with arthritis or compromised dexterity. Instead of the traditional ring, look for a ring that swings open when you tug gently on the loop. Another idea is a ring with two removable silver balls, which prevent the keys from slipping off the loop. Think how this will solve an unspoken need—a keychain that won't hurt fingers, joints, manicures, or a short temper.