This is one parenting hack that most parents should know about before their kids start sleeping in their own rooms. Putting a rubber band around both door knobs will help couples with young kids. These rubber bands allows parents to go check up on their kids by allowing them open and close a door almost silently, so that the click doesn’t wake their sleeping child. Parents can’t help but to check up on their kids throughout the night, but this is one way they can do it in stealth so that they can make it in and out like the ninjas they wish they were. It can also prevent toddlers from accidentally locking up doors as well.