3Com PalmPilot Organizer
The PalmPilot is more than just a hand-held PDA. It's small and light enough to be easily slipped into a jacket, trouser or even shirt pocket. It turns on instantly at the touch of a button, so you can look up information very quickly. There's no keyboard - all input is performed using the touch-sensitive screen and the supplied stylus (or sometimes a fingertip).
Text entry is performed via an easy-to-learn modified alphabet, called Graffiti. This makes the PalmPilot convenient to use even when when you're standing or walking around, holding the device in one hand and busily scribing with the other.
Plus, there is an ever-growing selection of third-party applications for the PalmPilot, much of it low-priced but high-quality shareware (and even freeware).
As you can probably tell, I'm a big fan of the PalmPilot. Here are links to some Windows 95/NT utilities which I've written for the PalmPilot, and some sources of further information: