BUG
If you're a do-it-yourself kinda guy, you might be interested in checking out the BUG for your gadget needs. Made up of a BUGbase ($300) and BUGmodules ($50-$100), BUG is a tinkerer's dream, allowing you to add functionality where and how you want it, and write software for the little guy using open source tools. It offers standard features like an ARM CPU, Linux, USB, a rechargeable battery, Ethernet, and more, but you can rest assured this is anything but a standard gadget.