I have created a backup Mastodon account. That can be found here.
@MrGrumpyMonkey_BackupBackup of MrGrumpyMonkey
Nothing will be posted there, other than with updates as to whether this current instance is down due to whatever reason.
If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/mrgrumpymonkey/statuses/113937375107766669 on your instance and quote it. (Note that quoting is not supported in Mastodon.)