I've been searching for a good candidate for an USB folding keyboard that you can carry around for the GP2X Cradle. Here are some I found that you might find useful as well..

Cherry's USB Folding Keyboard ($35~40)

(Review)



Tabletkiosk USB Folding Keyboard ($49.95)

website



Now only if I can get the USB hosting on my F200/Cradle set up to recognize USB devices... sigh...

Aldi $14.99 special, roll-up KB (Tevion flexi); I have it in white. Clashes with the cradle but looks good with the F-200.