By way of CNet News:
Unimpressed with the idea of just “walking around in a box,” last Halloween Jared Winick, left, went as a fully-functional iPod using a tablet PC, a rewired USB mouse, and a bit of Java code to play and display MP3s. Some battery-powered speakers provided the sound. He even won a costume contest and seemed to be having a great time.
Continue on to CNet to view pictures.