Patience, creativity, openmindedness are among the qualities a photographer should possess. Ingenuity, however, is accompanied by sheer willpower and passion. For the clever photographer, a cardboard can already do loads of things.
Such is light stenciling by taking a cardboard box and cutting out a shape, using the shape with wax paper and colored sheet of cellophane, or using it for long exposure, or innovating your own macro lens with extension tubes -- because let's face it, lenses are extremely expensive.
This 4-minute video from the Cooperative of Photography has some more tricks upon its sleeves with just a cheap piece of cardboard. Don't pass this one out.
Preview image was taken from the video.