Before I graduated from Ringling I heard some of my friends talk about playing with those bleach pens on old jeans. I recently bought a bleach pen to try to take care of a stain, and in the meantime I told my niece to bring over a couple pairs of her old jeans for me to play with.
Bleach pens and denim is a great combination!
I'm going to experiment with this a bit more... I'm considering making and selling them for some spare cash sometime in the future.
In the meantime, though, a pair of my jeans are going to be getting the swirly treatment.