One image, multiple pieces, on your own printer. Printing tool from PosteRazor - free, downloadable - it dissects raster images into pieces to print on your home printer and then reassemble for an awesome piece of wall art.
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 from Grandma would be great for the kitchen! Love this idea!