SUNLU 3D Printer Filament, Neatly Wound 250G Spool PLA Filament Bundle PLA Filament Muticolor, High Compatiblity, 8 Rolls, Black+White+Grey+Burlywood+Purple+Bluegrey+GrassGreen+PureYellow

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.