Lot of sales for 4th of july (and ongoing ones) where you can pay $10-$14 for a YEAR of a small cheap VPS. Usually only has 1GB of memory, but that’s plenty to play around with and learn. If nothing else, a good cheap ipv4 you can use for some port forwarding. There are lots of options, but I’ve used racknerd and ethernetservers which have been fine.
I have my own server at home, but I bought two small ones to start learning Ansible with in a risk free way. Eventually plan to redo my main server with a complete Ansible setup, really want to hop on that “infrastructure as code” train.
For several years I connected to my home surveillance cameras via dynamic IP. It went months at a time without change, very infrequent. Created a tasker profile, android app, to pull IP daily when my alarm went off in the morning. If IP changed I would get a notification with the new IP address. I could then reconfigure my connection when needed.