Here's a question for you, if I may..?
What is your key piece of kit..? what do you need to do what you do..?
For me, it's my iPhone and Moleskine 2010 planner.
I think my Nikon D60 is up there... with my nifty 50mm lens... but I don't use it for work.
My iPad is creeping in too. I think it may replace my planner / notebook at work as well as at play.
So yeah... what's your key piece of kit?