Help with school. Really urgent!!!?

My art teacher has designed a project for us to leave our mark in the school by painting a ceiling tile( about 16 inches by 16 inches).she is using pop art which us painting something or someone that was popular in 2010/2011. I love love love horses and would love it if mine could be horses. But horses have been around for hundreds of years, they aren't new. I am not into all the popular brands and "Justin beiber" stuff. Any ideas or comments on what I could do?? Thanks so much and sorry for the long description!!!