Does anyone collect something else other than music.

Wine. European.Thousands of bottles. The right choice for any occasion.
Women, yes, earlier in life. Experience, yes, all over, and often and various, so many lucky encounters. Books, from philosophy to botany, and not just music and audio kit. 

Has anyone mentioned plants? I collect the rarest and most special trees, shrubs and perennials.Cultivars of European Beech top the long list of deciduous shade trees, while specimens of 21st Century Epimedium introductions, courtesy of Darrell Probst and Prof. Ogitsu, form the most refined perennial backbone of my enterprise. A hundred various peonies, just to occupy what would otherwise be weed space.

My grounds are a smaller scale arboretum/botanical garden, more compact like Linda Hall but with some specimens equal to those in the vast expanses of Arnold, Morton, etc. I personally plant, mow,  trim,prune and transplant, slowly getting the symbiosis right, having done so for 35 years.
Forgetting a few other things here. But no model trains. No wristwatches. Just wine, Armagnacs, great books, the best cookware, and the finest specimen plants. Plus whatever I'm not remembering just now.
Well, you asked. LOL to the witty answers above.

Memories... the best ones are releasing big fish and keeping an eater for dinner.... in very remote places where if I screw up I am dead...

Pinball Machines.  Mostly EM (electro mechanical) from before about 1977.  But some newer since then.  Iron Man is the newest.  

It fills a real gearhead bent without the depreciation.  

Great bourbons, wines and art!  All are perfect with great music!
cheers

I don't have a 'collection', per se...but 'things' collect me.

The odd art....Masami Teraoka print, "31 Flavors Invades Japan" is above my desk, an original water color gift from a designer that respected my work, some raku ceramic pieces, other prints that struck fancy, this 'n that...*s*

I collected neon items for awhile, but they don't travel well and run voltages that rival 'stat speakers....and higher. "Don't touch th..."

"Yes, I'm got something for your burnt finger....here's a drink..."

('Caution! 15,000 volts!' sign notwithstanding....*sigh*)

Items collect me...like 'bendable plywood', wanting something 'subtle' to be done with it.  Odd wood, one of which I can't find in any list of rare wood.

Cast-off PA cabinets that rendered an 18" EV woofer that got reconed professionally, and awaits a cabinet.  A pair of JBL speaker with mangled cabs, but the drivers intact, more or less (10" woofers reconed, but everthing else 'good to go').  A pair of DIY cabs that rendered a 12" Utah woofers (reconed) and the matching horns.
(Since 'repurposed' into a pair of 'pseudo-Ohms"...a private joke...)

I 'collect' odd tools for the work of our business, odd in itself.
(We design, build, and install 'natural playground' structures.  In itself, uneffected by C19...thankfully....).  We have some things that other wood shops would likely not consider, or even recognize.

*L* Anything that enters my space...leaves 'different'.

That's my 'thing'....*S*

I can't count the times I've been approached with..."....this has Jerry written all over it.  Here..."

Given a proper budget, I'm about ready to do the impossible with Nothing. 

It's a knack. ;)