杌

兀 = 一 + 儿 : Mnemonic symbol: A 胡兀尔, a kind of Chinese fiddle with four strings, more commonly known as 四胡.

兀 = 一 + 儿 : Sun Wukong is playing his 胡兀尔 in the space station's bathroom, but he's deliberatly playing very badly in order to annoy Willy Walrus. Willy Walrus is so annoyed that he threatens to cut off Sun Wukong's feet with a flute if he doesn't stop.

木 = 八 + 十 : Mnemonic symbol: a Christmas tree. Malte Monkey is putting up a Christmas tree (木) in the bathroom of the space station (Ø4). He's using a cross (十) as a base to put the tree on, and decorates the tree with eight-balls (八).