This is a good idea for dessert (even better if it is following pizza) A sweet pizza. Take a normal pizza base or a flan or pie base and bake it if necassary. Melt some chocolate (preferably milk) and spread it over the base as you would with tomato puree. Decorate with candy and coloured icing which you get in tube. Also you could make mini ones and give them to the kids to take home afterwards. They will be a great hit!