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.