二林

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).

林 = 木 : Li Qingzhao (li) wants to plant a small forest (林) in the encampment's kitchen ((e)n2). She already put up two Christmas trees (木).