>> little Raspberry Pi 4 server that I run from my home ISP, for no reason other than to have some fun

This.

I run mine on RPi 3B+ with a 4 running the database. I reverse proxy to my site via a cloud VPS instance for $4 a month. I switched to the cloud after years on NO-IP when 1) I noticed my IP never changed and 2) my home IP address was public via a look up of my domain name.

On another 3B+ I have a VPN so I can SSH in .

Some day I will get around doing a roll-your-own-ngrok [0] so I don't have to open any ports but have yet to do it. I have done it for a project I was working on and I needed to make the local dev server accessible to a 3rd party. Pretty slick and saves a bunch of time and hassle from having to put the code on the server. (As an aside: Does anyone else dislike the term "grok"? For whatever reason it annoys the hell out of me.)

I really have nothing important on there and go months or years without doing anything to it then get a burst of creativity or what not and update the site or just tinker with it.

[0] https://jerrington.me/posts/2019-01-29-self-hosted-ngrok.htm...