Kaefer found some of the cut up corks the Geek created :
Since she wants to make a cork board, she was ready to make her very own designs.
The only thing you need - beside the cork of course - is a magnifying glass and the sun. Collect the sun rays in the magnifying glass and direct them to the cork. The moment you see smoke, guide the cork with your fingers to "paint" your own design. Make sure to wear sunglasses - it's extremely bright!
Kaefer made this beautiful swirl:
I love her creativity.