What I would do is let other people do your dirty work. If the person took some shit from other people that you wouldn't mess with, then chances are they'll take care of him for ya.

As for the satisfaction part, if him getting his ass beat by some others isn't enough, then I think you should go for the glueing of the glitter. In fact, I am now considering a couple people I could do that to now that I've read this post.

Also, you may want to use something that won't come off, like super glue or epoxy. Maybe even glue some pennies or other objects to the car.

A couple of tips. Number one, even if you don't reveal where things are kept, the notion that you have pot often is enough to have someone begin watching your moves. In other words if you grow your own and have pot more often than for instance someone who doesn't grow, maybe he put 1 and 1 together.

Another tip is that I wouldn't try to get revenge physically. You can do the car thing, but if you begin injuring people, I feel like you're starting something that can have much larger consequences for everyone involved, even you.