I got tired of there being no hardware-less option for a P1P filament side-mount, so I made one. This mounts into the pre-existing holes meant for the printable side panels. It requires:

[3] Screws meant for the printable phone mount

(included in the P1P box)

The [2] mount screws for the original spool holder

I gave it a 30% honeycomb infill, but it still has a little bend. Maybe try a 35% or 40%.

Notes:

Make sure, when taking the spool holder off the back of the printer, to replace the original, smaller screw that took the place of the right hole. I believe this was designed to hold on the printer's back panel. If you tossed it when you put the damn thing together, I wouldn't worry about it…

If I'm the first to make this design, yay me…