I’m not sure if they all do, but some models also support a daughter board for additional IO. Often it’s DisplayPort but I’ve seen ones with Ethernet and DB9/RS232 on AliExpress/ebay

Some of the HP DeskMini machines might be a good one. There’s a model that has 2 x m.2 for a little high speed network storage or as a HTPC.

Bonus points if you do it the day before you leave for vacation!

Jellyfin has a remote control feature that lets you do something like this, I use it quite a lot for music.

I would love to switch to LibreOffice (or similar) but I haven’t been able to find a way to get tables to work in the same way they do in Excel, and that’s a deal breaker for me. None of the suggested approaches come close to being able to select a range, press ctrl+t and immediately be able to filter/sort/lookup using column names from anywhere in the document. I use that feature dozens of times a day, and so does everyone in my circles that deals with financial data.