橡

橡 = 木 + 象 : Marie Curie (xi) wants to plant some oaks (橡) in the anglepod's bathroom (ang4), so she had the KFNB Elephant (象) transport young oaks to the bathroom. In exchange she provides the train with a lot of Christmas trees (木) to be used as fuel for the steam engine.

木 = 八 + 十 : Mnemonic symbol: a Christmas tree. Malte Monkey is putting up a Christmas tree (木) in the bathroom of the space station (Ø4). He's using a cross (十) as a base to put the tree on, and decorates the tree with eight-balls (八).

象 = ⺈ + 口 + 豕 : Mnemonic symbol: I already used an ordinary elephant for 勹, which is fine, because 勹 appears many times and 象 only a few times. Thus to represent 象 I'll use a locomotive from 1844's Austria, which was called "KFNB Elephant".

象 = ⺈ + 口 + 豕 : Marie Curie sees the crane and the swine fight about a single mandarin in the anglepod's bathroom. To smooth down the differences, with a locomotive she drives a whole container of mandarins in the bathroom.