I've started hitting the prints since starting this sport and also love 3D Printing.
Started off with a Molle Case for my phone looked at some on Cult and thingiverse and well I have access to bigger toys so went with a 3D printed case & a Titnaium protective plate on the front with an adjustable Aluminium carrier to clip it to the molle band, I'll probably tweak the rear plate to take some weight out of it its fairly overkill at the moment lol, still in the trial and error stage though so tweaks to follow.
Have also printed BB canisters, funnels, speed loader adapters all the usual stuff, batter boxex, pistal case, and probably over 50 of the banger grenades :).