This is one of my SAS cards – it accommodates an uncropped 4×6 photo and fits into a business size envelope. (Oh how I miss our large open ended envelopes)
http://mjrindal.blogspot.com/2009/10/christmas-stamp-stack.html
Stamps: All Holidays
Inks: Chocolate Chip
Papers: Garden Green, Merry Moments DSP, Very Vanilla
Accessories: Vintage Brads
Cool idea!