Books. I have upwards of 700, and moving them is a real chore. Always looking for more, though. Right now I’m collecting the Black Stallion books in the Gibralter Library edition, which was the one I read as a child.
Fountain pens. Love to look at them, hold them, write with them.
Tea. It never lasts long.
Plants
And now the inadvertant stuff:
Yogurt containers with plastic lids
Grocery bags
Ticket stubs
Nifty coins
I’ve managed to get a curve on it, but I can’t control the curve very well. Ricky Jay makes it look so damn easy.
On the other hand, I am finally getting down the Piet Forton pop-out move. (If you’ve seen “Ricky Jay and his 52 Assistants”, he uses it near the beginning for a four queen production.)
Sorry for the hijack.
Dr. J
Obsessive implies irrational.
I collect old license plates.
Not just mine, not just good ones, or old ones, or those in states or years I don’t already have.
I just like them, to put in a pile, and never look at or sort into order or show to anyone.
That’s “Things you obsessively collect”; no attempt to cover behaviour with rationale, I just do it.