I am thinking of doing something quite dramatic w wallpaper in the recently installed under-stairs toilet. Something statementy and fun or dramatic that I'll no doubt get bored of in about 10 minutes. But I live with 3 boys- none of whom seem to be able to find the toilet bowl with any great degree of accuracy. What can I do to protect the wallpaper from their, errr, "territory markings"?! Will I have the same issue if I paint it instead?? I really don't want to tile up the wall but if there's no option given my issue- what kind of tiles? Simple subway ones? Colour?? Thanks all!