聿

聿 = 二 + 肀 : Mnemonic symbol: a broad decorator's brush.

Yu the Great (yu) is painting in the space station's bathroom (Ø4). First she paints backgrounds with a decorator's brush (聿), then applies some details using a crayon (肀), and finally she discharges a capacitor (二) on the canvas for special effects.

二 = 一 : Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).

Aphrodite tags the space station's bathroom using her crayon.