KidLock for Mac

From Balance Software, Inc.:

KidLock is a paint and play program designed to entertain children while simultaneously keeping your files safe from harm. It accomplishes this by preventing application switches while it is running, and it can *ONLY* be quit by the familiar command-Q keyboard action (which we hope really little kids won't know how to do). Kids of all ages (and adults too!) will enjoy the program as it is extremely easy to use and has bright, vibrant colors that you or they can create with. Nearly every key has an action of some sort, and words and sentences can even be written that will be spoken back by the computer! This program has been tested on our own kids and they love it, and yours will too!