Not a lot especially for the amount of shows that I go to, but I got picks from Belphegor, Hate and Devin Townsend. I got the Belphegor and Hate picks in the same show (Sepultura headlining).
I also caught Unearth's set list from their 2009 tour with Cannibal Corpse and Hatebreed.
I've taken down some posters from Reggie's since they have a LOT of them to spare. I've got Augury, Deicide (tour), Rotting Christ (tour), Fatality (band gave me this one), Jungle Rot, and Vader (but it ripped a lot).
Also got a blow up sword (which I lost at MDF) and a foam sword from Powerglove both times I saw them.
Might be missing more