I’ve played around with digital “enabling” of toy cameras for a while now, from my first Digital Holga to the pinhole digital, and even the “barbieCam”- a modified body cap using a plastic lens from an old Barbie Movie Projector.  Sorry.  I haven’t yet found any image of such a thing on Google.  It’s fun stuff, especially if you’re a Holga, toy camera fan and love them blurry photos. 
 

A buddy of mine found this little Bakelite camera in the cellar of a friend’s house, while helping him clean out.  This is a Univex Model A camera from Universal Camera Corporation, a camera that sold in the  1930’s for around 39¢, with a “00” film roll that sported what looks like a full 35mm frame. 
 

The lens is easily removable and can be replaced without damaging it, a plus for such a sweet vintage camera…  so here’s a how-to on using a body cap with your DSLR to try out some of this special “glass”…  well, uh, lenses. 
 

Glass only comes into the equation some of the time…