I don’t know about you, but I still have my old Palm 650. It’s a little big, and doesn’t have a wireless account anymore, but it’s great alarm clock and an easy way to take notes, so I keep it around. And, if I ever need a GSM phone, I just need to swap out the SIM card and we’re good to go. Color me surprised when I read that someone had ported Android to the Palm 650. Supposedly it doesn’t run very quickly (Android really pushes the limits on what the Palm can do), but if you’re in the mood to tinker, go for it and let me know how it goes:
http://www.engadget.com/2009/11/13/palm-treo-650-boots-into-android-lives-a-fulfilling-life-video/