Amazon.com: Amazon Basics PLA 3D Printer Filament, 1.75mm, 5 Assorted Colors, 1 kg per Spool, 5 Spools : Industrial & Scientific
Amazon.com: Geeetech Luminous PLA 3D Printer Filament,Glow in The Dark Blue,1.75mm(±0.03mm),1kg,Amazing Brightness and Long Time Light,Fit Most FDM 3D Printer : Industrial & Scientific
FAI DA TE 3d stampante filamento più colori Facoltativi PLA/ABS 1.75mm RepRap plastica Gomma di Consumo Materiale 0.2/KG hotsale|Materiali per stampa 3D| - AliExpress
This device recycles plastic water bottles into 3D printing filament (and it's open source) | ZDNET