I've documented my film hoarding elsewhere on APUG. Lots of 70mm film. Lots of 4x5. And as much 5x7 and 8x10 as I can afford. That said, I continue to buy new film and cycle through it. Putting the new stuff in the freezer and using the oldest stuff now. I want to continue to support current production, but also have a stash for when the commie hordes invade. Oops. Sorry. Wrong decade.
I've started hoarding some recently discontinued paper in anticipation of trying it. And if I don't like it, maybe I can sell it for a profit in a year or two.
I like to think I'm hoarding equipment, but it's really just GAS. I HAVE been slowly CLAing things in anticipation of eventual parts availibility issues for things like my Hasselblad gear and some old Rollei TLRs.