Axim X5 and X51v they were blazing fast for the day and I still like to use them. A Jornada and of course a Dreamcast. Also the infotainment/NAV head-unit I recently installed in my car.
Funny, I just dug out my old Dell Axim that has been sitting in a box for years. My daughter used to draw on it (back before tablets/etc) and she wanted to see if it looked like she remembered. I haven't tried charging it and powering it on, maybe I should.