Using a cardboard template, a cloth, and a tripod, psychologist Richard Wiseman found a way to make ordinary people tiny.

The illusion is an improvement on a technique pioneered by Jean Beuchet in the 1960s. More at the link below.

(Richard Wiseman, “A New Version of the Beuchet Chair Illusion,” i-Perception 7:6 [November-December 2016], 2041669516679168.)