Tool Holder Base

I wanted to try one of the many tool holders that hang off of the Makerbot chassis. The problem is that I have covers over the three openings and I have aspirations to build a canopy over the top. I decided to design up a holder to sit on my desk and to hook around the opening on the base to keep it in place. I notched the hook so I could pull it forward.

The holder holds two SD cards, my spring loaded needle nose, hex wrenches and a staple puller (great for getting finished parts off of t