Update December 2018 - I have now added another model to this thing with a the Makita logo the correct way up. Thanks to Tagemand for giving me the nudge to get it done!
This very sturdy tool holder is to go with my Makita DC18RC battery charger mount and allow me to store some of my Makita tools on my pegboard. Created using Simhopp's excellent model (makita-b) as a base and edited using Microsoft 3D Builder! I find this tool excellent for editing existing STL files, you just have to take things one step at a time and re-export each time you make a change.
Featured in this video:
As shown in the video it has no issue with large tools such as the monstrous DTW1002Z impact wrench, although I wouldn't be happy leaving it there!
I used plastic trim rivets and 8 x 1/2" pan head screws to attach these to the pegboard as these fit nicely. The part is designed with enough clearance for the head of the rivet and the head of the screw, however printer tolerances might mean some minor filing is required. The rivets are expanded by the screws and anchor the part in place. I have a thin metal pegboard and these work fine, they should still work with slightly thicker wood or fibreboard pegboards but I don't have any to test with.