面罩

面 = 丆 + 囬 : Mnemonic symbol: a spray flask with one of these liquids which make a surface super slippery.

In the anthill's bathroom (an4), Marilyn Monroe (mi) wants to set up a wind wheel (丆) on top of a closet (囬). Just as she tries to fix it she slips and falls down, the wind wheel crashing on the floor. She didn't notice that somebody used a can of non-stick coating (面) on the closet's surfaces (面).

罩 = 卓 + 罒 : James II of England (zh) wants to make a cover (罩) for his banjo (卓). In the aorta's bathroom (ao4) he crafts a cover using an old fishing net (罒).