Yeah, Cloudflare tunnel takes care of the dynamic DNS. It has limitations, which is why I switched to Caddy and Nginx, but Cloudflare is relatively easy to set up for n00bs and I highly recommend it.

What I did, which probably applies to almost nobody: Downgraded my home servers to a single Beelink Mini PC; still gets the job done, though it is slower. Offloaded a bunch of stuff, including backups and video stuff, to my much more powerful work server and NAS. My work has a lease with electricity included. (It’s my business, so I’m not doing anything fishy.) Old hardware is sitting unused. The one downside to this is that my older setup was using ~20% CPU all the time, whereas the new one uses like ~60% and goes to 100% at peaks. I don’t notice it in practice.

Also, I added solar panels to my house. So even if I were paying for my older setup, it would’ve been covered.