I bought a bunch of these "Apache 1800" watertight cases from Harbor Freight. You can remove individual foam squares to cut out pretty much any shape you want. I used superglue and toothpicks around the edge to hold the remaining foam together as a solid, coherent unit. Inside, I can store the Jornada, two spare batteries, my 3Com ethernet card, the dongle, a wifi card and my PCMCIA - to - MicroSD - Adapter - Mess. This was a fun after-work project last week.