For all you makers who want a spool holder, but do not want to go outside and shop for a PVC pipe, I present to you a very cheap solution that will fix your problem from your sofa.

Easy print, fire and forget, and a few hours later you got a snapfit spool holder. Each section can hold 3 spools (Not more due to limitations of the P1 bed size).

Under assembly, be sure to have the circular side of the beams upwards, and the bed orientation downwards.

Just be aware that the snap fit are a bit thin, so repeat pulling and pushing it in, will cause the fit to loose to much, and you must print another beam. If this gains attention, I will make a better fit.