Simple Skadis holder for six small hookup wire spools, like the ones included in Adafruit's basic Hook-up Wire Spool Set.
This model requires M2.5 heat-set inserts, M2.5 screws, and printed hooks for mounting and an additional 4x M2.5 heat-set inserts and M2.5 screws for securing the top plate.
Once printed, just cut the “spool rod” (usually a length of plastic tubing) to length to fit snugly into the printed box then drop it in with the spools on it. Pretty simple! :)
The top plate is optional but helps to keep the spools in place while dispensing wire. I found that printing and assembling it was worth the time but I had a bunch of extra M2.5 screws on hand, so YMMV. :)
For printing any heat-set insert project on a FFF/FDM printer its a good idea to use 4+ perimeters to make sure that there's enough surface for the inserts to bite into.
My test and final prints were done on a stock Prusa MINI+ with Prusament PETG. PLA and other materials should work fine though.
The author remixed this model.