Yes I jumped on the bandwagon, I now have a Silhouette, woohoo! Oh how I love this machine!!! I will still use my Cricut but it is unbelievable how intricate the Silhouette will cut. Anyway I wanted some polaroid frames and came up with this design, they are the same size as a polaroid film would be (3 1/2 x 4 1/4 with the internal picture frame measurements being 3 x 3 1/8) but you can always ungroup them and make them any size you like!!
Heres a screenshot of what they look like, and the download link is under the pic. The file is in studio format so you will have to have a Silhouette and Silhouette Studio to use this file.