I'm looking for an adapter that will convert a normal usb keyboard into a bluetooth keyboard. Does such a thing exist? Of cours, I realize that it would have to have a power supply / batteries, but even so such an item could be useful. Specifically, I'd like to pick up one of those small Happy Hacking keyboards and convert it to bluetooth.
As an alternative, does anyone know of a bluetooth keyboard that has the same size and feel of the Newton keyboards? I've got an old Newton serial keyboard that I've previously used on a palm pilot, and really liked the feel and portability of it.

hmm dont think there is such an adapter... why not use a usb host cable instead? :/

I assume you already know about the iGo (which I so far like).

The only two others which seem reasonable are the Palm keyboard:

http://www.keyboardgalaxy.com/showroom/984.cfm

This is probably closest to the Newton, but is not verified to work so far (anyone have one?), but I doubt there would be a problem.

The new Apple wireless keyboard is bluetooth. Also not verified to my knowledge, but it is a real keyboard.

I have the old (big full sized) apple keyboard, and it is not stable with the n810, but works fine with my apple computers.

Correction - the old apple keyboard works. Originally it didn't, but it was paired with my notebook too at the same time so there may have been hiccups.

There is also a fabric bluetooth keyboard (from elec tex, google it, xtreme-geek has it too), but the reviews have been mixed - it is nothing like a tactile keyboard.

For me the iGo is adequate (but having to do the blue Fn or green Fn all the time is taking some time to get used to).

I agree with derekp, I too would like this device. I take my laptop home each night. Each morning I have to plug in the keyboard. I know I can get a bluetooth keyboard, but the one I have does not come in a bluetooth version. Since the keyboard is a USB hub, not sure exactly how that would work over bluetooth.