I'm Derek Sivers. I was a professional musician for most of my life, the ringleader/MC of a circus for 10 years, founded a music distribution company called CD Baby and ran it for 10 years. Now I'm more of a writer/speaker/programmer kinda guy, speaking at TED, writing books, and programming the projects you see at http://sivers.org.
Two Lenovo Thinkpads. An old T400 and a newer W520. One in the office, one at home. They're synced clones of eachother, so if one breaks or is stolen, I'm fine. I highly recommend this approach to everyone, if you can afford it. It's such a massive relief to not have to worry about your digital life, or even your day's work, disappearing. I've had a hard drive die a couple times, and it was so nice to just walk over to the other laptop and carry on working, letting the other laptop fix up and re-install from scratch in the background.
Arch Linux. I'm kindof old-school. I got way into computers back in 1981, before there was a mouse, and I still prefer to do everything on the command line. Firefox, xterm, xpdf, mplayer, and Anki are the only applications I use. Anki I use for learning anything from frameworks to French. I do all my writing and programming in Vim. I never look to the newest thing, but prefer those technologies that have stood the test of time. They often have a little learning curve, but a huge payoff once you get to know them.
I don't wish for much. I don't blame my tools for my lack of productivity. I see others have done so much more than me with so much less, so I can't ever fool myself into thinking it's the tools' fault.
I wish there was a great VoIP client on the command line, so I didn't need a phone or Skype.
Talking with musicians. Hearing about the problems they're having. Wanting to help them thrive.