Believe it or not, these photo effects are super simple. My 3rd grade students set up their own display of Halloween items and took their digital photos while holding a colored Post-It note over the flash! I saw this idea in a magazine and had to try it out. We found that purple didn't seem to work very well, but blue, lime green, orange, and hot pink worked great! The kids loved it, practiced using the digital camera, and gained experience in setting up still-lifes.