Pick up a peephole viewer at Home Depot for $11 and suddenly you have yourself a 160-degree super wide angle lens. This is shown working with one of the Canon Digital Elph cameras, but it will probably work with other pocket cameras, too. You simply hold the peephole up to the lens, then zoom in, take your shot and then clean everything up later in the image editor of your choice. Objects may be closer than they appear.
$11 Super Wide Angle Digital Camera [Instructables, via boingboing]
