西固

西 = 兀 + 囗 : The wild west is largely recognized by the symbol of the cowboy hat.

西 = 兀 + 囗 : Marie Curie has gone crazy from the loneliness in space. In front of the space station, she sits inside of a large wooden box, wearing a cowboy hat and playing a 胡兀尔 fiddle, thinking that she's participating in a square dance in the wild west.

固 = 古 + 囗 : Gitta Giraffe is building a hard and solid stronghold inside the bathroom's space station. The stronghold consists of a cloister inside a wooden box.