古書

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.

书 = 丨 + ㇆ + 丶 : Sheldon Shrimp (shu) is enjoying a good book (书) in front of the space station (Ø1). Because he is lazy, he built a thingy to hold the pages in place with a dinosaur bone (丨) and two plows (㇆). He is laying very comfortable on a petal (丶) serving as sofa.