As an example of what I was trying to accomplish when I started this whole train of thought the other day, here is a test/model:
Enter loads the gun, space fires it.
Here I wanted steam to be created during the canister ejection, like it was depressurizing. Which meant creating a "particle" like effect. After I started it I realized that each "particle" was being affected the same, which led me to this forum post. Now, as you can see if you run it, when the canister is ejected each particle acts on it's own. Looking over the events that make that possible it's not as bad as I thought it would be, but if I wanted to copy/past this same set of events to another object I couldn't. I understand families are coming and it'll be interesting to see what that is all about.
Thanks again for the time and effort :)