Kyle Evans created a electric didgeridoo that can be performed wirelessly through a bluetooth transmission to his computer:
I created this instrument to experiment in the combination of the organic sound qualities of a didgeridoo with the advanced signal processing capabilities of modern computer programming and sound synthesis. This custom built didgeridoo features externally mounted modules that allow the performer to process and manipulate the sound of the instrument in real time. All control data is transmitted wirelessly via blue tooth and is controlling several audio processes created in a custom-built software environment.
You can view complete schematics for the instrument and videos of live performances at Evans' blog.
via Make | Evans' blog about the project