Thanks to this thread I have learned about a new (to me) portable from IBM that I had never heard of before. The Workpad Z50.
Looks like an X styled Windows CE device and after reading a few articles on it and checking e-bay pricing it seems to be a good machine to get my feet wet with as far as Windows CE goes. I've never used that OS before but I never had a need to either. While I still do not have a need to run it now, my inner geek demands that I purchase the device and play with it.
Ah, yes. The Z50. I have a couple of them. They are excellent in many ways, probably could be thought of as the 1st Netbook. Windows CE is quite limited, but it has a suite of scaled down productivity applications (like Word) that are very useful. You can use a CF card (actually, 2 of them if you use a PCMCIA to CF adapter) and save your files there. Excellent (really I can't overemphasize this) keyboard, and the familiar trackpoint.
The screen is not TFT, but the passive LCD technology, and you can't compare it to TFT. I think the reason they used that technology is to improve on battery life, which is spectacular (the extended battery runs for 16 hours,) and there is an adapter which takes 8 alcaline AA batteries also (which means that you can have a "netbook" running on AA batteries.)
Another point where the Z50 excels is at sound recording. It's not high fidelity recording, but more of a note-taking quality, but the microphone picks up very well, which makes it an excellent choice for taking notes or recording during meetings. You can record to CF card to capacity, and using different encodings and bit rates (almost unlimited space.)
I'm in the process of installing NetBSD on one of mine as we speak, because I'm thinking of selling it in eBay, and hopefully that will increase its value somewhat.
But yes, I think you will enjoy tinkering with it.