I think chromebooks are pretty locked down these days. The old ones you can unlock and install Linux on the bare metal are underpowered. 4g RAM and 64g storage typically. I use one as a touch screens for home Assistant and to run Pihole.

I would recommend a Think Pad with 4 cores and 8g RAM from eBay. Should be plenty for your use case and cheap. I have a 10 or 12 year old idea pad that I use about the same way you do and it still running great with PopOs.

Sorry if this is not correct, I’m not on Apple, but I think ssh is built in. Maybe iPad is different. Here’s a link that may help https://www.servermania.com/kb/articles/ssh-mac

Use shift+control+v to paste. Shift+control+c to copy in the terminal. It’s this way because control+c in the terminal is to break out of the currently running process.

https://github.com/cdot/Xanado

Scrabble web app

https://www.rescuedogs101.com/bringing-new-dog-home-3-3-3-rule/ Check out this. Also training the dog to sit and stay is good. Have them sit and stay whenever they are worked up. Barking and such. Works better than yelling at them.

https://tailscale.com/ it’s an easy way to connect devices on a mesh VPN.