There are so many companies popping up that are making stuff out of your Instagram photos. Here are a few we've tried recently. Do you have any favorites? Please post in the comments below or upload a photo of your promo to instagram and use the hashtag #igphotogpromos so everyone can see.
Sticky Gram magnets
Artifact Uprising - photo books, prints, calendars and more
Printstagram - from teeny tiny photo books to photo strips and larger books
Postagram - Site is geared toward the consumer, but you could customize the postcard to be appropriate for clients.
ImageSnap - Ceramic tiles (with or without magnetic backing)