The best home lab is not the one with the most services. It is the one whose owner can explain what is running, why it is running, and how to restore it after a long break.
I keep the foundation deliberately small: a current operating system, a short list of long-lived services, explicit configuration files, and one place for operational notes. Every service gets a local health check and a restart policy. Every public entry point has a clear owner.
The most useful habit is to write down the dependency graph. A static site may depend on a local web server, which depends on a directory of generated files. A private application may depend on a tunnel, a local listener, and an outbound connection. When those relationships are documented, a failure becomes a checklist instead of a guessing game.
Backups are tested, not merely created. A backup that has never been restored is an assumption. Once a month, I restore a small sample into a temporary directory and verify that the files are readable, the permissions are sensible, and the documented recovery command still works.
The result is pleasantly unremarkable: fewer moving parts, fewer surprises, and enough observability to know when something changes.