Suncast Shed Compatible Tool Holder

I was inspired by this holder: https://www.printables.com/model/488218-tool-shovel-holder-for-suncast-sheds but it took a very long time to print and I felt it used more filament than necessary.

I used tinkercad to create the design and went through several iterations before I got a design that could hold a shovel by the head or handle and get screwed in tight and flush to the wall of the shed.

I am not an experienced 3D modeler and designer but I feel like this is pretty practical and prints in a reasonable amount of time on older printers. This should print in about 2.3/3hrs and I had to set my x-y hole compensation in the slicer so that the hole was large enough for the collar of the bolt to set in nicely. My remixed bolts can be found here: https://www.printables.com/model/1334699-flathead-suncast-bolt

If you have ideas for improvements, please let me know! I love learning and had fun working on this project.