As for me... I'm a huge Sonic collector, I've been collecting Sonic stuff for 3 1/2 years and I'm very proud of how my collection looks. I've spent thousands on my collection, I still don't know how I manage it!
I've gotten a lot more since this pic was taken, which can be seen here: http://www.videogamemm.com/thehorde/main.php?g2_itemId=6954
These clothing pics are old, they were taken before Christmas, I've gotten A LOT more Sonic clothing items since then, but I'm just too lazy to get it all out again to take another pic.
I think that's all the main stuff, but I do have a lot more stored away. I would show a pic of my Sonic comics and games, but that area of my collection is very lacking, and is too shameful to show >.<