If you only care about having a static IPv6 address take a look at TunnelBroker by Hurricane Electric. They give you free /48 IPv6 blocks tunnelled through their network. Words of warning though: 1) some ISPs block using this service (prevent the tunnel from working), 2) in my experience I’ve seen high latency due to weird routing, 3) those IPs ending up on blocklists due to abuse and 4) the tunnel is unencrypted so traffic between you and Hurricane Electric is trivially intercepted, though if that was a problem in the first place then you wouldn’t be hosting from your home network anyway so this is mostly moot.