SOMEONE CALL THE DOCTOR (I found this on a doctor who board. just gonna casually leave this here. ya know, in case one of you is the Doctor in hiding.) <- these comments, love how they don't relate to some creepy pyramids but the doctor who fandom
This creepy-crawly craft is explained at Filthy Wizardry. The kids dipped the snails from our back yard in the food colouring and put them down on the paper. After the initial shock the snails began to move about the paper and create art for us.