Thanks for welcoming me! I've just updated the first post with some pictures of my collection. Still not everything, but it's a start
My favorite item? That's very hard to say. The first LBP-item that I bought (apart from the first game) is the Sackboy controller holder (haven't photographed that one yet). I still really like that one since it's so cute. If I had to pick a favorite thing from my entire game-collection, I would pick the entire LBP-collection though ;p