Designed this myself to hold the tools I use regularly when printing. Added some additional holes / cutouts for extra stuff for the future.
Features
Geometric design
Easy to print (no supports!)
Versatile design can fit a multitude of tools
Top / Deep Area
3mm, 5mm, and 7mm holes
8 rectangular holes for pliers, calipers, brushes, etc.
Front holes are shallower than the rest (see CAD screenshot for heights)
Glue Stick Hole
1 rectangular hole
5x 3mm holes for allen keys / small screwdrivers
Build Plate Holder
1mm slot on the side for standing up a build plate alongside the tower.
Printing Notes
Increase the number of walls to around 3 or 4 so that it can withstand metal tools banging around inside.
The more infill you add, the heavier it will be and the more sturdy it will rest on your desk. 25% infill with Lines/Grid infill will require ~330g of filament but the thing will feel rock solid.
For PrusaSlicer users, the variable layer height works well (as pictured above), if the sloped areas / tool openings are printed at the lowest settings (0.07) and the rest is printed at the highest (0.25-0.3mm), you get some really nice detail without sacrificing print time!