This is a ghetto tilt-shift lens that I created from a previous DIY design. Basically, it is a medium format lens taped onto a toilet plunger. It has no backing and no permanent mount so I just press it up against my camera and start twisting and pulling until I get the effect I want. So far no exciting pictures.
I've detailed what I did here:
EDIT: A camera store employee saw this and named it the Plunger Baby in tribute to the Lens Babies they sell.