Rattling car... solutions?

Other than Dynamat-type products, is there any special fillers or sealing materials that I can stuff into rattling parts? The grilles on my rear speakers seem to jump out and rattle sometimes, and those vents right next to the inside brake light like to add to the annoyance. The doors do this too. I need something more permanent than stuffing folded paper into inconspicuous areas. :P

Buy some stirafome plates and put it behind hatever is raddling
that's what i did to my old car it works great

Problems with vibration? If you dont wanna use any sound dampening material, try using an undercoating spray, it's cheap and easy to use.

try cut pieces of sponge or styrafoam :bigthumb:

well hey, on the same topic, my 97 civic ex rear interior piece (were 6x9 speakers are) is all lose dosent even seem to fasten down er anything, is this normal? cause it rattles! I'll try to post some pics to better illustrate what I'm tryin to say,