Fart, talk, sing, breathe and drink coffee. What else? But I like music in the background. Something like Black Sabbath, Yungwie Malmsteen, R.E.M., SRV, Eric Johnson, Tool, Wes Montgomery or a Classical tune I like (particularly Moonlight Sonata).
Usually I will browse Youtube or listen to music. I need background noise, not too sure why though, I just feel better when it's there.