3D printing lenses is now a thing and you can make them yourself
2KG Pack】Transparent PLA Filament 1.75mm 1KG (FRESH) — Kingroon 3D
How to get clear PLA filament print more clearly?
How to 3D print clear plastic parts - UltiMaker
This clear filament ball is amazing! : r/BambuLab
Divide By Zero Technologies - Clear PETG filament is one of the easiest to print clearly and get good results. Good quality PETG can also be easily sanded & polished afterwards –
The Best Transparent & Clear PLA Filaments of 2023
GIANTARM Apple Green 3D Printer PLA Filament 1Kg,Toughness Enhanced Filament with 1.75mm Dimensional Accuracy +/-0.03mm, 1080 Feet per Roll, Vacuum Packaging, for Most 3D FDM Printer : Industrial & Scientific
Transparent FDM 3D Prints are Clearly Stronger! — CNC Kitchen
AMOLEN PLA 3D Printer Filament, PLA Filament 1.75mm Silk Shiny Filament Red Gold Filament, 3D Printing Gradient Filament 1KG/2.2lb : : Industrial & Scientific
1.75mm Transparent PLA Filament for 3D Printer, 334m Reel, 1kg - VB55317
How to 3D print clear plastic parts - UltiMaker