Lifestyle 15 Everyday Objects with Secret Uses You Don’t Know About By thingslife Posted on March 8, 2017 2. The Hole in Elevator Doors Have you ever noticed the weirdo peep hole in elevator doors? Well don’t worry, nobody is spying on you, this hole is a special keyhole for emergency workers to open doors in case of an emergency. BackNext Page! Related Items:aluminum foil box, apple sauce spoon, bottle necks, bread tag colours, diy, home improvement, household, how to unfold take out containers, ketchup bottle, kitchen, life hacks, pen cap, pot handle spoon, secret uses, small pocket on jeans, soda can tab Recommended for you 21 Ways to Exercise Without Hitting a Gym 20 Cleaning Secrets Everyone Should Know Facts You Should Know