Wall Stabilizer Clip for Measuring Stick Desk

My wife had this great idea to utilize colored yard sticks and wine crates to make small computer desk fro our kids ... only one problem, the desks were prone to rocking if they were not anchored to the wall. Since there was only a need to stabilize, and not secure, the desk to the wall, I created this small clip (using 2 per desk) to reduce the change or rocking. They are rock steady under normal use now ;-)