At the moment, just an old desktop running HTTP/SSH/IRC functionality, and a 1U server I have modified for fitting full size (as in like, the huge, foot-long) PCI cards; mostly for the goofy projects I do in my spare time. It is a hardened machine though, and should be capable of running a few daemons if it comes down to it.

EDIT: I should mention I'm on satellite internet (there's quite literally no options for broadband where I live. I will, however, use my phone line for SSH via dial-up occasionally), so it's probably not very practical to run SMTP. For that, I have a Fastmail account.