I was able to boot up one of my recent acquisitions for the first time last night, since I've now got its power cable: a Lenovo Thinkpad T61, from 2006. 2 GHz Core 2 Duo, integrated graphics, and 4 GB of RAM. Can't put storage into it without a disk caddy, but I can at least boot some things from USB to ensure the thing still functions; namely, Haiku (a build from 2024) and Linux Mint 22.3 (it's what I had on hand). Alas, it froze during the Quake test, so I'll hold off on any further.
Items potentially on the wishlist for PonderSlab? Well, the Ultrabay is currently empty. Logic dictates that I put a DVD drive in it, but I wonder if there is anything weirder or more interesting that can go in the bay. I spotted someone on eBay selling an Ultrabay ZIP-100 drive, but the pictures were so bad I couldn't be sure if it was even a ZIP drive, let alone for an Ultrabay.