3D Printer Silk Filament, SUNLU Shiny Silk PLA Filament, Smooth Silky Surface, Great Easy to Print for 3D Printers, Dimensional Accuracy +/-, Red+Blue+Orange+Red Copper, Total 4KG

Well-known as much for their S1/S2 filament dryers as for the filament itself. The material catalog — PLA, PETG, ABS, TPU, silk — is broad and frequently discounted on Amazon. Solid all-around option.