I still argue that an N8x0 tablet is a minimum of extra equipment. You're just not going to find a PC this small anywhere else. I'm pretty confident that the hardware limitations of the N900 mean that you're going to need the battery pack, power injection cable and the hub even if you manage to hack the N900 to be a USB host. The N8x0 tablets are very compact little devices, and are much more capable and easier to hack than anything else proposed so far. The problem.