A creation of Dr. Jacqueline Woolley and her research group, Children's Research Laboratory, at the University of Texas for the purposes of studying whether an original, fantastical being could really capture the imaginations of children. The basic premise is that on Halloween night, a child can set aside any unwanted candy they collect during their trick-or-treat outing and the Candy Witch will then fly to their homes while they are sleeping and exchange the candy for toys. She is a friendly, kind witch, not a scary or mean one.