My Ladder just was just missing one thing. A holder for my drill bits and screws. I found a super easy way to add a magnet to my ladder using Gorilla Glue and a Magnet.
Step 1: Hard Drive Magnet
I removed one side of a hard drive magnet from an old computer hard drive
Step 2: Gorilla Glue
Gorilla Glue was the strongest glue I had. I glued the magnet under the tray. It has held for over a year so far so I'm not worried about it falling off.
Holds a few screws or your bits when changing them around and it never falls off.