USB-OTG is a glorious thing. I've recently been hooking up all sorts of odd peripherals to my HTC phone (and to my brother's tablet). One really cool one was an ancient barcode laser-scanner; worked the instant it was plugged in, no drivers required...

Why wouldn't you want to properly manage any sort of peripheral from a portable computing device? It drives me nuts that people have sort of accepted the notion that "Hey, it's tiny! So of course it can't do all the same things a normal computer can do..."