Take something you really love: a letter, envelope, photograph, a ticket stub... anything - to a printing place like Kinkos and have them blow it up for you to hang as art. An old recipe would be great for the kitchen! Love this idea!
Bender Photo Collage - I used a 4' x 6' canvas with 12"x 14" blocks of 4x6"photos. Think quilt blocks. Glue pictures on with Elmers glue leaving a small border between. I nailed (every 12 inches or so)the canvas to wall behind random pictures to keep it smooth. We bought "primed" molding to frame it and nailed to wall. Paint trim to match woodwork. This has been up 18 months and still smooth.
How Gallery Walls are Like Cats (And Why Your Home Probably Needs One)