This is one of the first things I whipped up on an as-needed basis. My desk is kind of sunken into the carpet on one end and therefor I cannot get to the little adjustable feet to raise it up, leaving the drawers to roll open on their own (especially from the shaking of my bot that sits atop it). I was feeling VERY lazy about it so rather than fixing the issue I decided to circumvent it with these handy little guys! They clip the edge of the drawer and hold it shut until you need it open, which is as simple as flexing the tab away from the drawer and pulling it open. When closing just do as normal, the drawer will slip past the tab and lock in place. Just adhere to the desk with some foam mounting tape and your done!