The Blank Slate: What's the Craziest Thing You've Used in Design?

Throughout my design career I've found ways to incorporate everything from feathers, wood, grass and dirt to paint, fabric, oil and grease in my work. In my opinion, part of the fun of design is realizing how limitless it truly is. Design can be found in anything, and can be created with anything. Tomorrow I am publishing a new Photoshop Brush for our Resource Collection called Ink Stains and Bleach. The set was created by combining inks splatters with drops of bleach. The set is a perfect example of using off-the-wall elements to create something new and unique. For this issue of The Blank Slate... I want to know what you consider to be the craziest thing that you have used in your design work. Use the comment form below to tell us about the project and how you utilized something unconventional to produce the end result.