I don't really like having to open a drawer to get at a tool—I actually prefer the tools mounted on the wall if possible so that less effort is required to begin using them. (Yes, I'm lazy. I don't know if I mentioned that before.) Anyway, the main purpose of these drawers and compartments was to store things I use at the bench often, but that don't really lend themselves to being mounted on the wall behind me, in an effort to prevent them from littering my bench top. I tried to make it so that the two top-most drawers held the things I use pretty much every day (pencils and chalk, erasers, files & rasps, pliers, wrenches, etc.) so that retrieving them was easier.