Already have one, the swipe UI is great, highly recommended.

Picked up a Magic Cube laser bluetooth HID compliant keyboard.

Unfortunately the N9 doesn't support bluetooth keyboards:

HID has not been disabled by default in /etc/bluetooth/main.conf

The hid and hidp modules are present, but cannot be loaded manually, developer mode provides terminal access, but permission is restricted, there is no root account access, so you can't manually load modules etc, or have them loaded at boot time by editing /etc/modules

Also owning the N900, as much as I like the N9, it's more a users phone than a developers phone.

Still this thing would be damn cool with a pico projector and laser keyboard, if it worked.

The on screen keyboard lacks the navigation arrow buttons, which is a bit frustrating.

I hope the Mer project can carry on with the Swipe UI and make some cool releases. Maybe Nokia will make the new Window's phones flashable as well so we can install our favourite Maemo based releases on those phones too.