To assemble a mat:
1. Pop out the glass panel of a photo shadow box and paint the frame orange or any color you like.
2. Line the inside of the box with three to four layers of cork shelf liner, thick enough for a wine cork to reach the top of the shadow box when placed upright.
3. Line the box with wine corks, one by one. Just when you think the box is full, squeeze in a few more to make sure they're snug.