困難

困 = 囗 + 木 : New mnemonic symbol to avoid confusion with 夗: sleeping pills.

Karl Koala (ku) prepared a nest made out of Christmas trees (木) stuffed into a plastic enclosure (囗) in the encampment's bathroom ((e)n4). To make sure that he sleeps (困) really well he pops sleeping pills (困) before laying down in his nest.

难 = 又 + 隹 : Mnemonic symbol: a video game which is almost impossible to beat.

难 = 又 + 隹 : Just inside the anthill's kitchen, Napoleon and a sparrow are trying to beat an insanely difficult video game. After playing and failing all day long Napoleon finally loses his temper and crashes the game wearing two boxing gloves.