The Door Muffler
$7
See inspiration below
$7
See inspiration below

Simple Solutions for the Modern Mom
When my third child was born I was surprised and disappointed when he wasn't a deep sleeper and the slightest noise would wake him up. His door would rattle when the AC came on or when someone would open any other door in the house. Even when I closed the door behind me after putting him down, he would wake up.
Frustration turned on my MacGyver mode and I started messing with different solutions. Finally I came up with this very simple design that solved three of my problems: