sand animation
manipulation of sand to create animation, by applying sand to a surface and then rendering images by drawing lines and figures in the sand with one's hands; a sand animation performer will often use the aid of an overhead projector or lightbox
en-GB/ˈsænd ˌænɪˈmeɪʃn/
en-US/ˈsænd ˌænəˈmeɪʃən/