In the UK there is one that is pay as you go. (You pay per letter/parcel received)

I just put in the minimum deposit and used that. As long as no one actually sends anything it is basically free apart from the deposit. (I think it was £5)

I just use a free PO Box service. Then the Whois guard on top.

There is Parrot OS Home edition which is marketed as privacy and security friendly.

https://www.parrotsec.org/

I read somewhere someone had their encryption key on their phone / another server and had the server pull the key via ftp on boot. Then the server and encryption key is separated but can decrypt its self as long on the ftp server is available.

Edit - might have been unraid where the OS and data drivers are separate

The UKs NHS do some.

https://www.nhs.uk/conditions/nhs-fitness-studio/

https://www.nhs.uk/live-well/exercise/get-running-with-couch-to-5k/

The other day I saw someone hosting their blog on a GitHub repository.

Just using markdown files and folders to organise it to their liking.

If you are writing stories you could use a similar approach. A folder per story then subfolders for chapters. Then having the main page have links each story’s folder with links to each chapter inside.