My two must-haves are my cell phone and my MacBook Pro laptop, which allows me to update my Web site from wherever I am, whether I'm in Africa or in Sun Valley skiing. ↗
I currently use Ubuntu Linux, on a standalone laptop - it has no Internet connection. I occasionally carry flash memory drives between this machine and the Macs that I use for network surfing and graphics; but I trust my family jewels only to Linux. ↗