My daughters 3rd birthday is going to be movie theatre themed. I have this plan to do kettle corn cupcakes and also coca cola cupcakes. I've bought thick coca cola drinking glasses and I want to bake the cupcakes right inside the glass. I'm a little nervous about it bc a lot of things I've read say that the glass will shatter. However, I've seen a lot of cupcakes baked in mason jars. Has anyone had success doing this or is it just a terrible idea?