I am really excited that my sister/MOH found these online. I wanted butterflies around my cake, but it always creeped me out that they are all made out of feathers (plus I'm vegan so I'm trying to avoid animal products in my wedding as much as possible). She found some edible ones!
http://www.etsy.com/listing/61605577/the-original-edible-butterflies-assortedI just ordered the skeleton ones for FI's bday in September...I plan to use them on the cake I make him.