Mad Scientist activity of the future #1 Easier if you make it in a plastic bag labeled TOXIC! BIOHAZARD! or something like that. Label the materials and place them in containers with an appropriate measuring spoon or cup. Let kids grab a bag, write their name on it with sharpie, and go down the line collecting the ingredients into the bag. Then zip up the bag and have them goosh it around. Turn out the lights, and voila!