I have a Handspring Visor Deluxe, and I love it.
I use it less than I did when I got it but when you have as bad a memory as I do, it comes in handy.
I have all my phone numbers, addresses, work travel information, maps, reminders and birthdays in there. I don't use much else besides that but it wasn't that expensive to begin with so it's cool.
Oh and I forgot the best part.
It's
green.