I wonder if accessing your own computer is considered hosting. Ultimately network traffic is traffic.

A tool called Tailscale will allow you to access other devices on the same virtual network from anywhere, without anyone else having access.

If you install it on each device, they can share the same network, even whilst away from your own home.

If you have a computer that provides “cloud” like services, like NextCloud for example, then it too can be part of the same network.

Outcome: You’re self-hosting without “hosting”.