Among my must-have selfhosting items, in no particular order, I can recommend:
- Portainer, to keep track of what's going on.
- Nginx Proxy Manager, to ensure https with valid certificate to those services I want to have available from the outside.
- Pihole, of course.
- Gitea, to store my coding stuff.
- Paperless-ngx, to store every paper in my life.
- Immich, an amazingly good replacement for Google Photos.