These cheapo endoscopes make an excellent high-zoom magnifying glass when connected to PC. I use one all the time, and plugging/unplugging it is bothersome, so I hooked it to a back USB permanenly and made a hanger to keep at hand's reach.

Trivial 15-minute print with zero frills, Use two-sided tape to attach.

FreeCAD project attached.

Affiliate links:
Endoscope
Two-sided tape