Saw this in this month's PDN:

Lensbabies are lens attachments that allow you to turn your $1500 digital SLR into a $30 Holga.

Lensbabies are the hybrid love children of an old-fashioned bellows camera and an up-tight tilt-shift lens.  Focus your Lensbaby by moving the focusing collar in and out with your fingertips. Move the "sweet spot" of focus around the picture by bending the lens left, right, up, & down, like a fluid tilt-shift lens.

Maybe not for everyone, but I'm intrigued.