I have to confess that because I travel between 3 places, routinely 2 in the US and 1 in Central America, I've been able to sort of disguise my stashes.
There's the soaping stash in El Salvador dug up by my roommate. The soaping molds because I was planning on doing a major soap batch. Oh boy. Thirteen silicone molds, the largest with 12 individual 3.5oz bars in the shape of turkeys, the smallest a 6 bar heart one of 2.5oz bars. There were 2 logs made of cedar, and 2 plywood slab molds. The wooden ones made to order by a local carpenter, who makes my furniture as well.
My yarn stash is also spread between this house, my older son's house in San Antonio, and I'll be leaving some here in WI with my younger son. Hopefully I'll be back to pick it up later this year to join its entity in San Antonio. My collection is almost 90% cotton yarn, with thread #30 to worsted weight. I love crocheting really tiny stuff, and things for my soaps, and everything in between. My kids don't like for me to give anything away, except my younger son who "uses" my stuff to romance his dates. That includes the soaps.
I don't even count the kitchen stuff I keep buying when I'm at any of these houses because I keep leaving it behind for them to use.
The longest I've lived anywhere since I was born was 4 years, and those 3 periods have been a tie between my birthplace of San Francisco, and El Salvador. So I can only REALLY claim stashes with the stuff that I left with my Nanny and at my house, both in ES.