古宅

古 = 十 + 口 : Mnemonic symbol: at least on German maps, this character actually resembles a cloister.

Oh no! Gitta Giraffe (gu) found that the golden cross (十) broke off of the cloister (古) in the space station's living room (Ø3)! She skewers a mandarin (口) on top of the cloister so that she can skewer the broken off cross back on to fix it.

宅 = 乇 + 宀 : Mnemonic symbol: hanging around at home playing video games. After graduating, James II of England (zh) stays at home all day (宅) playing video games in the airplane's kitchen (ai2) while wearing his graduation cap (宀). He plays a game where he has to yield a blade of grass (乇) to control the sword master in his video game.