I have a Palm Universal Wireless Keyboard. It works fine. I considered Bluetooth, but as far as I can tell, that's a "one thing at a time" connection, and one use of a keyboard was while connected, possibly via Bluetooth. The fact that the PUWK was half the price of a comparable BT unit didn't hurt.
I second the recommendation on Tapland as a source of Zodiac info.
______ Dennis
I used to use the Stowaway Bluetooth keyboard and the beta3 PalmOS driver (When the hell are ThinkOutside going to update it?!), and it worked pretty well.
I had to stop 'tho because for some reason the WiFi driver and the keyboard driver don't play nice and cause random Fatal lockups.