I've got...a considerable number of books around. And my gf has friends who a) run an independent bookstore (hybrid of new & used books), and b) might be downsizing. I'm not looking to buy them out or take over their business directly (they're in north-central PA; I'm in New Hampshire and OMG we are STARVED for good used bookstores here), but seriously looking into it something bookstore-related is on my list for 2021. I live near Concord NH. Capitol city. Very nice. No used bookstores. Two bookstores total. The downtown one I used to work at is now a bagel place. I've been toying with the idea of doing something mobile. Much cheaper to get a street vendor license than a storefront. And if I could set up in front of, or near, the state house a couple days a week it'd be gold.
Edit: I'm not rich, and the startup costs of a business terrify me. Plus, I'm not overly "business-minded", so starting small and minimizing costs are key. I'm at least going to hit flea markets and the like this year, selling some of what I have around (both books and other).
Edit edit: And as long as I'm rambling, I was in Manchester VT the other day (meeting my ex to get my daughter) and wandered into the Manchester Woodcraft store. Almost died from envy. Woodshop in one part of the building, store in the other. Nothing in the store I couldn't make. I might want that more than a bookshop. (Incidently, the name Wicked Good Books is TAKEN by some place in Salem MA and I'm most wroth about it.)