SUNLU 4KG Quadruple Color Silk Filament, Silk PLA 3D Printer Filament, Dimensional Accuracy +/-, 1KG Spool(2.2 lbs), 4 Pack, PLA Silk Quadruple Color

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.