I have masses and masses of fabric stash, so much that I catalogued every single length. I used a swatch file, cut a bit of fabric and stuck it in with brief details also where it is. Generally I roll most fabrics as they stack better, I keep heavier fabrics flat
I bought a 4 bed house, when a 3 bed would have done. I was determined for once in my life, to have a dedicated sewing room and that is where I keep my fabric stash, apart from the lengths I still need to pre-wash, which are in a bedroom
I use shelves and cupboards and that does limit me, so that, when I start squashing fabrics to get them in, I unsubscribe from sites which tempt me
I make no apology for my fantastic stash and hobby, having sewn for 69 years. I know that my stash is better than money in the bank, all fabrics have surged in price
My wardrobe is now all hand made, including my latest coat for spring. My adult children also ask for me to make various items such as dungarees and jogging suits and mostly I have fabric in my stash
Pattern, yes also a magnificent stash of modern indie patterns
Knitting, A big stash of beautiful yarns from a local mill. Expensive and all packed so the moths cannot get in. Two big round and secure cardboard bins and more, full of fluff (wool /wool and silk /wool and silk and cashmere blends) all ready to spin. Enough for years and I have definitely stopped buying those
My beautiful hobbies will never be on the list to down size