For Christmas, my sister and brother-in-law gave me a filter/case for my iPhone.
The Holga iPhone Lens Filter Kit SLFT-IP4 is based on the Holga line of lomography cameras and comes with an array of actual filters that can add color, shapes, and vignettes.
 
This is a short clip from Fox News that shows how it looks and works. 



This is for 31 Photos in 31 Days.

Speaking of new toys, Oh So Posh Actions is having a lens give away.  Check it out here.