USB power bank organizer

I hope your printer likes overhangs...

This should fit USB batteries with a cross section of about 68mm x 17mm or smaller.

These are the ones I'm using, if you're curious:

• Miady 2-Pack 10000mAh Dual USB Portable Charger https://www.amazon.com/dp/B07XFBN7HX
• Miady 2-Pack 5000mAh Mini Portable Charger https://www.amazon.com/dp/B08T8TDS8S
• VANYUST S22 Portable Charger, Power Bank, 5000mAh External Battery Pack https://www.amazon.com/dp/B08QHDDBZM

FreeCAD source file is included in case you want to mess around with it.