What's better than a USB stick you can figure out how to boot all your favorite boot disks?
A small usb device that will read ISO files off of a hard drive or memory card and emulate a USB CDRom. And it even can drive a LCD so you have some menu options for emulation.
I seem to remember Darren looking for a teensy project. This is still beta and the hardware is a development board so it is a bit bulky but this is going to be awesome.
CD Emulator Project