We have been told asked to send in some cakes on Monday for DS2's Xmas fair. I am thinking of making some chocolate muffins as its about the only thing I can make that always comes out ok and they don't need decorating Problem is that I have silicone muffin trays and so don't use paper cases. It is ok to send in cakes which aren't in cases? I can put them in a big box, just wondering about hygiene if someone has to put them out. I know schools can be fussy about things like this.