variation on link, thanks to some random guy I met on an airplane years ago: take cereal boxes, cut out a square, glue a photo you like to the printed side, and turn the plain "inside" into the stationery side of the postcard.
16 Summer Travel Life Hacks That May Save Your Sanity
Here are some extremely simple life hacks that will make your life easier. << the dorritos one is stupid though. Who ACTUALLY knows how to use chopsticks, and why would you use them for cheetos or dorritos?