I have a whole bunch of spools of plastic around the house with like 1m of filament left, I'm working on burning them off by printing little things, like these washers.
@RueNahcMohr you can fuse many short filaments together to make a longer multi-colored filament.
@f4grx I always had to take 2 stabs at getting it to fuse, and it would never hold for long.
@RueNahcMohr @f4grx Some prints, you can just get away with feeding one after the other into the extruder. But I've always fused them (with a soldering iron, then trim off excess) and never really had trouble.