Here is a list of areas I have found and how I fixed it
-TRUNKLID -remove the trim panel from the trunk sill, there are two hex nuts, loosen them and lower the latch a couple mm. Make sure the trunk still closes before re-assembling.
-THIRD BRAKE LIGHT -push the tabs on the side in and pull the back off. pull the power plug from assembly, pull out assembly, now foam tape the plastic prism and reassemble after making sure the lights still work.
-BACK DASHBOARD -If you don't have folding rear seats, pull the backseat forward, it will pop out, remove third brake light from inside trunk, pull the carpeted area up. Jam some foam into the area closest to the rear window the reassemble (I don't know what changes with fold down rear seats) This solved the problem for me.
-SEATBELT REELS -remove the trim panel on the b-pillar, cover the area around the reel with foam and reassemble, making sure there is no interference with the belt.
-DASHBOARD -basically any area where two plastic parts meet will rattle so just be patient and buy lots of foam tape and every time you find a rattle, tape it up.
I hope this was in some way useful, these were the worst ratles in my own car but you could have completely different problems. Good luck.
The Honkeytonk
Monkey