何济于事

何 = 亻 + 可 : Mnemonic symbol (from "carry"): baby sling

何 = 亻 + 可 : In the elevator's kitchen, Rosa Luxemburg picks up the crying baby Hamlet from his bed of nails, puts him in his baby sling and tries to calm him down.

济 = 氵 + 齐 : Joan of Arc (ji) accidentally knocked over the only water supply bottle (氵) In the space station's bathroom (Ø4) and now she's in big trouble. She uses the empty bottle as a drum to call for help (济), but it is of no use; she would need a gong instead. Unfortunately the drum is ready, but the gong is not (齐).

于 = 亅 + 二 : Mnemonic symbol: prepositions (in, at, on, to, ...) are what glue the sentence together. Honey is as sticky as glue, so I'll represent 于 by a honey jar.

Yu the Great (于) was assigned to repair the electronics of the space station's kitchen (Ø2), but instead he was snacking honey from a honey jar (于). Unfortunately his capacitor (二) got stuck in the honey and now he has to use a crowbar (亅) to lever it out.

事 = 𠮛 + 彐 + 亅 : Mnemonic symbol: The thing.

事 = 𠮛 + 彐 + 亅 : Sherlock Holmes read a magic scroll in the bathroom of the space station. The scroll promised eternal love to anyone who reads it and wears a pig's nose while doing so, and Sherlock gave it a try. Now he summoned the thing, and he is scared to death! All he has to defend with is a crowbar. However, he never was in danger: Since he is wearing the pig snout, the thing thinks Sherlock is his mommy, and it just wants to cuddle.