I collect MCTs and have a gallery that has every single MCT item released to date except the Mech Suit Trunk. So for that gallery, yeah I collect them all just because of what they are and not because I adore all the MCTs.

But otherwise, I just collect parts of sets that I actually like :) Unless it's for something like an achievement, then I'll get as many as I can.

As far as large collections, I sort of have one. Demi Dazzling Dust is my favorite item on the site and I own 34 of them. I don't go out and actively buy a bunch, but that's what I've collected so far :) Pretty!

I have a little gallery of just things I like: [X]

I also have hordes of these in my vault:

I used to horde these: But I sold most of them when they went wearable.