庸碌

庸 = 广 + 用 + 肀 : Yu the Great (yu) crashes with her parachute (广) in front of the engine ((e)ng1) and breaks her leg. Luckily she finds a first aid kit (用) right away, but inside there is just an ordinary (庸) crayon (肀) which she has no use (庸) for.

碌 = 石 + 录 : Lenny Lemur (lu) is keeping a diary (录) in the space station's bathroom (Ø4), but it is quite laborious (碌) to write down (碌) a new entry because it is just a big stone (石).