(PonyTrope by kellyegan)

zo·e·trope - a 19th-century optical toy consisting of a cylinder with a series of pictures on the inner surface that, when viewed through slits with the cylinder rotating, give an impression of continuous motion.

phen·a·kis·to·scope - an optical toy resembling the zoetrope in principle and use and in one form consisting of a disk with the figures arranged about the center and having near the edge radial slits through which the figures are viewed by means of a mirror.