Heh, let me see... my FF collection consists of:
FF Origins (I and II)
FF Anthology (IV and V)
FFVIII (two copies - the first was the limited edition box-set with posters, stickers, a memory card and a t-shirt, the second is the Platinum version that I bought because the original version stopped working)
FFIX Tetra Master card game
FFIX playing cards
Squall's ring and chain
Two FFVIII t-shirts that are a bit wrecked but I can't throw them out
A FFIX t-shirt that's far too big but I don't care
...anything else? Oh yeah. The guidebooks for FFVIII, FFIX, FFX and FFX-2. And the DVD version of Final Fantasy: The Spirits Within. And various posters.
Oh God, the action figures...
Erm, yeah, I've got action figures too: Squall, Zell, Quistis, Selphie, Rinoa, Irvine, Laguna and Seifer. Though it's easy to forget about those when they're tucked away in the bottom of my wardrobe. In a box. Still in their original packaging.
Jesus Christ, I'm such a geek.
I dunno, I suppose it's not an unhealthy obsession, it's just cost me a fair few quid over the years. Though I must admit I haven't bought anything FF-related for quite a while. Of course, that'll change when FFXII comes out... still looking like May, as far as I'm aware.
This post is highly unlikely to be serious. Please treat it accordingly. Unless it's music-related, in which case I'm damn well right.