I'm fond of Little Open Source gadgets. To India's Simputer and MIT's latest "One Laptop Per Child" project, I've added the GP2X on which you can read a past post.
Now Linux.com has a nice little review of one model. The actual reviewer was actually the writer's son. He added a 4GB SD card and loads of software, games, MP3, videos and ebooks.
"The GP2X is an open, Linux-based handheld games console manufactured by Game Park Holdings of South Korea. It has a typical handheld control layout, a good quality backlit screen, built-in stereo speakers, headphone socket, and several connectivity and expansion options. My son is completely taken with the device, and it has won me over too. At £125 (or $190), you're not going to find a less expensive handheld device that can be expanded into a full-blown computer."
More about the GP2X here.