Haha, good question! One Halowe'en I cooked fettucine noodles in green coloured water then cooled and oiled the noodles and put them in a big bin with witches fingers. eyeballs, etc. what a mess! Then when we did the letter M and I made Monster slime with cornstarch and water it was a big mistake because everything they touched after playing in the slime had a cornstarch residue.