My old ThinkPad has been running pretty well as a full node with Electrum server etc. since I set it up. The only thing I haven't gotten to work yet is automatic boot unlocking with Tang and Clevis (which works fine with our rack servers in a private location). It's one of those things that are so tedious to debug and fix, that I hardly ever find the motivation for it.

We do have extended power cuts on this island at least once or twice a year, and sometimes they're too long for the UPS to keep everything running. But it's also nice to be able to reboot remotely for kernel upgrades and whatnot.