滴水不羼

滴 = 啇 + 氵 : Dorothy Gale (di) is watering the stem (啇) of the tree in front of the space station (Ø1). The water is dripping (滴) out of her water bottle (氵).

水 = ㇇ + 亅 + 丿 + ㇏ : Sheldon Shrimp just climbed the Eiffel Tower. He's really thirsty, so he's glad to find a water fountain. After he quenches his thirst, he also finds a snack: A banana is swimming in the water. He never ate a banana before, so he tries a mix of different methods: Putting on a fake beak to pick on the banana, holding it with a finger and peeling it with a crowbar.

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.