Great (if not the best) USB flash holder, USB_MASTER_3000!

Up to 12 USB-sticks. Can hold even the widest models.

Available with 3 models:

• No text
• Firstlayer
• USBMASTER3000

Printing setting suggestion:

Infill: 15+% (Gyroid or honeycomb)
Walls: 1-4
Top/Bottom layer: 2-4
Material: Any, your choice.