用

甬 = 又 + 用 : Mnemonic symbol: The path screened by walls to both sides could be the grave of Marquis Yi of Zeng. In his grave, a massive set of 64 bianzhong bells was found, of which 45 were 甬钟 bells. Thus, I'm going to represent 甬 by one of these yongzhong bells.

甬 = 又 + 用 : Inside of the engine, Yu the Great wanted to learn how to box. She made the right choice to wear boxing gloves, but as she had no punchbag she used a 甬钟. Like a boss she entered the ring through a path screened by walls on both sides. Unfortunately after her first punch she already had to use the first aid kit, because the bell was way too hard.

角 = ⺈ + 用 : Joan of Arc finds a hurt crane in a corner inside of the aorta. The crane hurt itself with a sharp horn earlier, which is now lying in another corner. Joan of Arc pulls out her first aid kit and administers first aid.

角 = ⺈ + 用 : Mnemonic symbol: a horn.

角 = ⺈ + 用 : Zeus is practising his theatre role just inside the elevator's kitchen: he's gonna play the dying swan. A crane flies by and sees him, thinking Zeus is really dying, and instantly starts administering first aid with a first aid kit he coincidentally carried around.

宁 = 丁 + 宀 : Mnemonic symbol: 列宁, Vladimir Ilyich Lenin.

Vladimir Lenin (宁) enters engine's kitchen ((e)ng2) when Nefertiti (ni) is preparing dinner. Nefertiti thinks Lenin wants to start a revolution, so she immediately tries to throw him out, but Lenin tells her he wants to remain peaceful (宁) and learn how to cook. As sign of humility he even takes his graduation cap (宀) and nails (丁) it to the wall.

拥 = 扌 + 用 : Yu the Great (yu) cut her finger in front of the engine ((e)ng1) and panicked she grabs the next first aid container (用). With the help of a toy claw (扌) she wraps (拥) her whole body in aseptic gauze.

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.

佣 = 亻 + 用 : Yu the Great and Rosa Luxemburg are lying hurt on the ground in front of the engine, and a servant of the engine uses his first aid kit to help them until the ambulance arrives.