Bluetoothy Goodness and the iPod of Touch

Does anyone know of a Foldable (NOT rollable/ rubber) bluetooth external keyboard that works with iOS4? I plan to use one with the iPod that I plan to buy soon.

FOR THE IGNUNT AMONG YOU: PLEASE NOTE

I DO NOT WANT TO CARRY A NOTEBOOK AROUND

I DO NOT WANT A NETBOOK, I want parts that will fit in pockets, or maybe a lunch box, not needing a messenger bag / backpack.

I DO NOT WANT TO USE THE TOUCH KEYBOARD ON THE IPOD for long typing projects, it sucks.

I DO NOT WANT ANOTHER MAC COMPUTER PRODUCT

Thanks!