Mix the "Poison" The poison on the apple is actually equal parts white school glue and shaving cream. Mix these together in a disposable cup or bowl for easy clean up. For an even spookier pumpkin you could add a few drops of green food colouring or paint to make the pumpkin look more like the poison apple from Snow White and the Seven Dwarfs. Image Source: POPSUGAR Photography / Megan duBois