Play Kalei is a creative new puzzle game by Chillingo that allows you to use your photo collection as part of the fun. It takes a particular section of a photograph and turns it into a kaleidoscope-style pattern, and you’re objective is to figure out where that point in the photo is. The normal version is available for $1, and there’s also an HD version designed for the iPad for $2.
Jonathan over at PhotoWeeklyOnline created a couple photography-related word search puzzles that contain words like “aperture” and “shutter”. There’s two puzzles, one for analog photography terms and one for digital. Print out the PDFs for a fun handout at a photography-related event or a quick diversion from work if you need a break.