I collect music (of course).
I also collect Georgian silver, books, DVDs of classic movies, DVDs of BBC series, other DVDs, opera DVDs, sheet music, jewellery when I can afford what I want (not as often as I'd like), single-sided 78s, and other things. I would LIKE to collect maps - old fantastical maps (the older, the better), and in fact, I have my eye on a couple of maps which I want. I am thinking of delving into just a bit of coin collecting (Roman coins) but I will almost certainly be a mere amateur at it (I won't be collecting to the extent of being a true coinee).
If only I could collect vintage cars...
I'm sure there are other things I'd like to collect, and there are other things I also collect.
Now please, come forward with your collecting passions!