An industrious Flickr user has hacked a regular kitchen cabinet door to accommodate an iPad and it looks great. Not only does the hack maintain full functionality of both the iPad and the cabinet, the sound outputs to a mini stereo.
Using a few wooden slats to hold the iPad in place, the iPad is easily slid in and out of the slats. The current setup will not allow for the power plug but Flickr user MyKitcheniPad plans to fix that soon with a Dremel. Sound is output to the auxiliary input of a mini stereo and the iPad maintains fully functionality.
See a video of the iPad in action below: