I had an uncle whom lived through the depression. The years following he lived quite frugally and had built up himself to be quite a wealthy man. My Aunt said that he had a strange habit that she was positive was because of living through the depression. He bought 2 of everything. If he bought a set of pots and pans, he bought 2, if he bought her a Winter coat he bought 2. She found it quite odd but he said, "What if one breaks, or wears out? You'll need another one". So he stockpiled 2 of everything he ever bought.
I took care of my Aunt the last years of her life and when she passed I had the responsibility of exacting her will, cleaning out her apartment, funeral arrangements, ect. Her apartment was a treasure trove of unopened boxes of dishware, pots and pans, bedding, shoes, stockings, you name it.
Myself, I find that I keep quite a few sheets tucked away. I stockpile things like face cream, perfume, body lotions, vitamins, medicines, first aid stuff, hats, gloves, scarfs, and I think it might be more of a collection then a stock pile but I have many handbags, clutches, head scarfs, hats & shoes. I've never paid full price for any of them with the exception of shoes. My Mom taught me that your wardrobe could be slim, but if you had acessories you could always change your look. So maybe it's a bit of a stockpile thing.