因式

因 = 囗 + 大 : Mnemonic symbol: the close reasoner René Descartes.

因 = 囗 + 大 : In front of the encampment ((e)n1), René Descartes (因), Maud Younger (y) and a robot (大) are starting a big rave. The robot sits inside a big box (囗) and is the master of ceremony, while René and Maud are dancing on the square. They started this rave to collect money for a good cause (因).

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.