I loved the idea of an eye upgrade that used glass inserts, but I was unable to move the eyes with the one I found on Thingiverse. So I redesigned the eyes to have a deeper inset so that they are still pose-able. I designed these around the limitations of an FDM printers line width with a .4 mm nozzle.

These are the eyes I used (same as OG design):

https://smile.amazon.com/gp/product/B01MQJRQMI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1.