Cory Doctorow told Gizmodo what's in his pocketses, so I invited my friends to do the same. My stuff isn't as interesting. In terms of mundane things, I carry two key rings, one with personal keys and one with work keys. I have a wallet, that usually has a few ones or a five. Some of the stuff I have is similar to Cory's: I have a 15inch Aluminum Powerbook G4 and an external firewire drive made from an old Powerbook drive (mine's only 10GB, though). The Powerbook is a truly great piece of engineering. I liked my old tibook a lot, but the new Aluminum Powerbook has faster processor and a much brighter screen, which mostly compensates for the shorter battery life.
I have a Palm Tungsten C -- a rather poor Palm device. I don't ever plan to get another. Part of the reason is that Palm is disontinuing support for the MacOS. The biggest problem for me, however, was the switch to Graffiti II -- I knew how to write in Grafitti really well and I've never been able to master the switch to writing in Grafitti II. The little keyboard is OK for entering appointments, but not for taking notes. I used to use my Palm all the time for taking notes, but now I hardly ever do that. Hopefully more robust Linux-based solutions will be available when it comes time to replace it, because I'll never buy a WinCE solution either.
My other pocket usually contains an owl-pellet of old receipts, pay stubs, appointment reminders and other detritus. Every so often, my pocket disgorges itself onto a table or nightstand and I have to pick through the bones of my recent life in order to see if anything is still relevant and worthy of further preservation. Today is has a pay slip from weeks ago that I found in unread mail on the table in my office, an advertisement for the place where I got my new glasses and the receipt for my glasses.
I would like to get a digital camera. The one I've had my eye on is the Canon SD100. Still a little more than I can afford to spend on a whim, but I'm hoping to get one before we go to St. Croix this summer.