I had a small VPS with small filesystem space, and I (temporarily) needed much more. I also had a Wireguard connection from this VPS to a server in my own home under my desk, slow but with plenty of disk space. My home connection was a standard ISP fibre, dynamic IP, but very stable in time. So, I used sshfs from the VPS to mount a folder in my home server. It was not very fast, but got the work done.