Tool cup with optional parts bin

I created this to hold the essential tools I need next to my printer:
- The [Print Scraper](https://www.thingiverse.com/thing:6929954)
- Some nippy cutters
- A [#12 scalpel](https://www.thingiverse.com/thing:6675785)
- The allen keys, etc my printer came with

I didn't see any minimal-material pen cups or anything that quite did what I needed so I designed this in OpenSCAD. You should be able to use the customizer to tweak some parameters, or mess with it in OpenSCAD!

Update: added an optional tiny parts bin -- think PTFE tubes, nozzles...