Current planned use cases are Pi Hole, Bitwarden (password manager) server, probably general network storage and torrenting, whatever other "homelab" things I think of later (which is why the specs probably seem a bit overkill)
Lenovo ThinkCentre mini desktop, eBay refurbished, $184 before tax
8GB RAM, 500GB SSD
Intel Core i5 6th Gen. (they don't specify but I'm assuming it's a 6000 series, which was released in 2016)
Direct link to the listing: https://www.ebay.com/itm/293526962748
You can do better. Look up "8 core Xeon workstation" on ebay, you'll find cheaper machines with more ram and disk
I'm intentionally getting a mini PC because I don't have a lot of space. also most of those seem to not have built in wifi, which I need
PCI wifi cards are cheap