Printstagram. They have super cute mini stickers and for those of you looking to make more of a statement, a 20" x 40" Instagrid Poster--and more products to come.
To order, all you need to do is from their site, login to your Instagram account and select the photos you'd like printed, confirm your details and pay. Very easy! I'll be ordering mini stickers soon and will let you know how they turned out.