Two weeks ago we published a showcase of beautiful pinhole photography, and this weekend again we've got something unusual and creative to lift up your spirits and challenge your creativity. Illusions can be eye-catching and attractive and when you apply them to computer displays, the results can be quite interesting and deceptive. Take transparent screen trick photos, for example. The idea is simple: you take a photo of your surroundings and set this photo as your desktop wallpaper. Once t...