Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2673597.
I designed this to fit my 20 year old Aztek airbrush. I'm not sure what else it may fit.
Designed this to fit over a Glad "Tupperware type container." I'm including the version I printed, along with a version with removable vent so you can stick in some filter paper (try coffee paper or paper towel).
Fill the container partway with water to keep it upright and absorb the spray. The container I used is 177mm in diameter. Easy enough to subtract a different rim diameter from the model if you want it to fit something of a different size.
I designed two versions of the vent cap, one with some friction notches. I'd guess that won't fit too well over filter paper, so the smooth one will likely be better with a filter. You may even need to print it a bit smaller if it's too tight.