Recycling Frame for Reading or Prescription Glasses

Ugly and cheap, but if you can't afford new glasses and just sat on your old pair, this will do. Or if you are trying to get reading glasses for poor part of the world, this can work. The frame is big enough to hold most common size lenses, and the ear pieces can be trimmed to fit with a strong pair of scissors. The hinge rods are just a short pieces of raw PETG filament.
The lenses can be held in place with glue or (as shown) double sided tape.

The lens holder "for paperclip" is desig