I wish I had something written up to share. But it's honestly a mix of things I love to play with. Several full blockchain nodes (especially uploading to light clients), bittorrent client (seeding tons), plex, home assistant, boinc, tor bridge, grafana, web and email servers, zoneminder CCTV, mandelbulber (clustered rendering of 3d fractals), four different Minecraft servers (some modded), ADS-B plane tracking, weather station and radiation monitoring, and a bunch more.

It's really just one big toy for me. I'm using Proxmox for high availability of over 30 VM's (still want to play with containers soon).

EDIT: OPNSense firewall says I uploaded over 15TB in the last month. Fortunately Google fiber doesn't care!