Proxy through a VPS, or use dynamic DNS if you don’t mind occasionally waiting for TTL expiration when your address suddenly changes. You can set it to 1 minute and that often works these days (it didn’t always).

Will your ISP give you a static IPv6 block? It’s v4 that’s scarce, but if it’s just for your own stuff and you aren’t worried about users on old v4 networks, it’s fine to just use pure v6.