YAUTDH - Yet another USB-A thumb drive holder (17 USB) - Simple - 17-Slot USB-A Thumb Drive Holder

This 17-slot USB-A thumb drive holder is the perfect solution for organizing your messy USB drives. It is designed to hold 17 USB-A thumb drives in a neat linear row, so you can easily find the one you need. The holder is compact and easy to use, and it can be placed on your desk, in a drawer, or anywhere else that is convenient for you.

This thumb drive holder is also a great way to protect your thumb drives from damage. The slots are snug enough to hold your thumb drives in place, but they are not so tight that you will have difficulty removing them. 

I suggest printing a few layers of this model and testing for fit before you print the entire model.  You may want to scale this up or down depending on how your printer works.