Sigh, this thing doesn't actually exist as a product at this time. At the right price point, I would buy one.

If you want to experiment with plastic-lens digital photography, you can buy a lens for Canon, Nikon, Sony, and Pentax cameras here: http://holgamods.com/

Here's an example of a picture shot with my DSLR + Holga Lens:

http://www.flickr.com/photos/martincron/862955606/in/set-721...