模块式

模 = 木 + 莫 : Mahatma Gandhi (m) and Mozart (莫) both want to impress a super model (模) in the observatory's kitchen (o2). They both set up beautiful Christmas trees (木) to impress the super model with their decoration skills.

模 = 木 + 莫 : Just inside the space station's entrance (Ø2) Mozart (莫) and Malte Monkey (mu) create a duplicate of a Christmas tree (木) using lots of silicon and a mold (模).

块 = 土 + 夬 : Karl Koala let the crystal ball drop in the airplane's bathroom. He collected all the pieces and fixed them together again using nothing but dirt. After he asks the crystal ball whether or not everything is okay, the crystal ball replies that Karl is a piece of shit.

式 = 工 + 弋 : I'll use a specific style as mnemonic symbol: 哥特式, gothic.

Sherlock Holmes and the goth are celebrating a Viking festival in the space station's bathroom. They don't have trunks to throw around, so they use a steel beam. They also celebrate by practising archery. In zero gravity it is easy for them to set one world record after the next.