I wanted a quick way to grab and put away my heat gun one handed, I had it hooked on the handle but that was too awkward while holding something else.
Fusion 360 CAD file included, all measurements are parameterized, you can adjust for other guns as needed in Fusion 360, just print SHIFT-P and edit the values, RingInsideDiameter being the most important value.
I used ASA in case it would get some heat from the gun when putting away right after use. PETG might be OK, let me know if you try it. I used 20% infill with 6 perimeter, 8 top & 8 bottom layers for strength.
Needs some support on the inside of the ring if you print with the base down like I did.
The author marked this model as their own original creation.