There is one problem with normal porcelain cups like the one I painted in late 2016, they always seem fragile and every time I take it along to a brony meetup I am wondering if I am going to get it back home in one piece. Because of that (and because of me developing enthusiasm for pyrograhpy), I bought a wooden cup at a medieval fair shortly before last Christmas. I burned an image of my OC Leafhelm, drawing a map into the cups surface. I am very happy with how it turned out. The cup is very solid and without any real risk of being accidentally broken.  
As a regular cup for brony meetups this one does come with some drawbacks however. I am shy to drink anything but water from it because I fear that anything else would leaf remains on the not perfectly smooth interior of the cup. While I am drinking water most of the time anyway, I cannot use the cup for the hot chocolate which is often served at the winter meetups. Moreover the cup does give a slightly woody taste to the water I am drinking from it. So in the long run I fear the cup is mostly a work of art I am happy with for what it is, but for the regular meetups I may still have to find an appropriate and unbreakable drinking vessel ;-)