Wearable electronics - or the practice of merging electronic circuits (and microcontrollers) with forms of clothing to create an interactive device between humans and technology - is increasingly popular due to the ease of construction and the imagination of some very creative people. One polished example of this has been created by Hannah Perner-Wilson with her "Joy Slippers". Not slippers that will make you happy (or will they?) but in fact slippers that can act as joystick controls for a computer.
Embedded inside each slipper are analogue pressure sensors, whose values are read by an attached Arduino board. The values are then sent back to a computer whose software can then take action based on the results. in Hannah's example a processing sketch allows the wearer to draw based on the motion of the feet - for example:
With the use of some extra code or an Arduino Leonardo-compatible board the slippers could emulate a USB mouse or keyboard. Not only would that create some fun but also perhaps a viable user-interface for the differently-abled. Either way it looks like fun and certainly something different.