靰

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.

革 = 廿 + 中 + 一 : Mnemonic symbol: a cow's hide.

Guy Fawkes (g) arrived at the entrance to the elevator (e2) to visit this year's darts grand finale. He is standing right next to the dart board (中) and cheers for his favourite player using a self-made drum. The drum consists of a flower pot (廿) over which Guy stretched a cow's hide (革). He is beating his drum using a flute (一).