I think that for the collections that have a lot of items you need to finish that specific collection, you should add a search bar so someone can search for a plushie or beanbag instead of having to scroll through the entire thing. Just a suggestion, though.

If you mean so you can check what you still need to get, the SubetaLodge site can check that stuff, I love it. My bad if that's not what you meant though.

(Or if you mean checking to see if you need a collection item before you buy it, hovering over it and clicking "account search" will tell you.)