Proxmox on a self-built rackserver (Will be building a second one for a proxmox cluster):
Raspberry Pi Zero for Pi-Hole (secondary)
On my Docker Host (All in docker-compose):
A Synology DS220+ for local Storage
A 5TB Hetzner Storage Box for Backups (encrypted)
A Rootserver for Games and some testing in the wild (Currently Windows, will be switched to ubuntu)
Hetzner Cloud Server with mailcow on it
Star Citizen works great on linux with Lutris. https://lutris.net/games/star-citizen/