When I stupidly threw a bleach rag on top of some dirty laundry and bleached big spots all over one of her teeshirts, she saw this as an opportunity to turn the bleach spots into cool faces and shapes with a Sharpie. She has been doodling on the teeshirt for the last few nights:
Sharpie on bleach spots - work in progress by
The crazy thing is, this looks great! I am seriously considering intentionally trying to replicate this kind of blotchy bleach spot effect on some of my old solid-color teeshirts so I can take a Sharpie to them as well.