I have a VPS for web hosting, but not enough storage for my Nextcloud needs. As mentioned by others, Hetzners Storage Box [1] has great value. I hooked up the latter to the former using Nextclouds External Storage and it works flawlessly. You could even think about running Nextcloud locally on a RaspPi and using this method to hook up cloud storage.

[1] https://www.hetzner.com/storage/storage-box [2] https://docs.nextcloud.com/server/latest/admin_manual/config...