Might be a odd request, but has anyone come across protective covers for LCD screens. We are looking to put a TV into a common room at our school, but knowing our kids if we just leave it as is the screen will get scratched/marked etc in a short space of time. So we are wondering if we can get some sort of glass/perspect cover to fit over the screen that would protect it but not distort the picture. Anyone have any idea if such things exist and if so where I might find one? MANY thanks for any info.