Nothing wrong with other tool holders, this fit my requirements best. It hold all stock supplied tools that come with the Ender 3, there is even a spot for the SD Card. it sits on top of the power supply.
Updated 9/16/18
-Rev2
-Additional Piece
Per Community Suggestions:
1--More storage space for small and large SD's
2--place for cutters on the front
3--more support in the rear to contact power supply
I added the additional supports (1mm) each side and included it as .stl (rev2). The additional storage and mount for the side cutter is simply a new piece that fits into the existing tool holder. Hope others find this useful!