Lomography and Toy Cameras are fun cameras to play with, yet most of these cameras use film so you can't see your finished product right away and you might end up spending a bunch on film and processing. The Holga is one of the more popular versions of this camera, and at such a cheap price it's easy to see why people would gravitate towards such a camera.
This instructable will show you how to make a simple holga lens for your digital camera so you can share in the toy camera awesomeness.
UPDATE: After doing some research about to better achieve that "athentic" effect, i found this flickr photo set: Digital Holga With Light Leaks
I would like to implement these changes in the future.
UPDATE 2: I have added an extra step to get better pictures