I recently spent like $170 giving a new lease on life to a 15-year-old Lenovo S10-3 Ideapad with a 1-core Intel Atom CPU, 2GB of RAM, a WiFi card, and a 250GB SSD running AntiX Linux in TTY/Command Line mode.
So far, I've turned it into a picture/frame + vision board running Tailscale so I could SSH in and/or rsync stuff.
I am also attempting to run a no-AI version of Pwnagotchi to pwn WiFi networks.
I am also using it as an always-on appliance that does stuff like rsync/backup my entire server, run lightweight Python scripts to check the uptime and days until domain expiration, etc., on a set of websites I own and would like to own, etc.
I have all of this stuff connected to a Telegram bot that reports to me.
It's an interesting set of constraints, and you can surprisingly do a lot of cool stuff.
Old Computer Challenge
http://occ.sdf.org/