Ask HN: How do you use your home server?

I've assembled atom/mini-itx based home server and looking for ideas how can I use it. It's already used for:

- torrent server with transmission (also tried utorrent server but it crashed continuously)

- backup other computers with rsnapshot

- samba server

- different sites not ready for public so doesn't require ordinary hosting

Plan to use it for:

- install dlna server to stream content into lan

- calibre server for my ebook library and converting feed for reading on kindle

- move my gitolite server there

- asterisk, still not sure do I need it

- monitoring of my sites

- install zoneminder and plug video camera for video monitoring

Any other ideas?