紙 paper

SHE wrote Mr. Speculum a letter on a piece of paper, and sent it to him by pulling a string which connected him.

letter ★★★★★ KUNKUN
手 (hand) + 紙 (paper) = 手紙 (letter)

origami ★★☆☆☆
折 (fold) + 紙 (paper) = 折り紙 (origami)