原故

原 = 厂 + 自 + 小 : Mnemonic symbol: I like how 原子, literally "original seed", means "atom". I'll represent 原 by 原子弹, an atomic bomb.

原 = 厂 + 自 + 小 : In the anthill's kitchen Yu the Great is modding a chocolate factory into a nuclear chocolate factory by powering it with an atomic bomb. Because it is hard to look inside the bomb through it's small opening, she uses a hand mirror to see inside and connect the wires. She also used a lot of daisies to decorate the bomb and underline her peaceful intentions.

原 = 厂 + 自 + 小 : Mnemonic symbol: I like how 原子, literally "original seed", means "atom". I'll represent 原 by 原子弹, an atomic bomb.

原 = 厂 + 自 + 小 : In the anthill's kitchen Yu the Great is modding a chocolate factory into a nuclear chocolate factory by powering it with an atomic bomb. Because it is hard to look inside the bomb through it's small opening, she uses a hand mirror to see inside and connect the wires. She also used a lot of daisies to decorate the bomb and underline her peaceful intentions.

故 = 古 + 攵 : Mnemonic symbol: This character only appears in 做, so we don't need a strong mnemonic symbol. We should be able to refer to 故 when we think of 故事 or 故意. Because it fits nicely to its components, I'll think of it as in the meaning of 故墓, an old grave.

故 = 古 + 攵 : There is an ancient cloister in the space station's bathroom, and Gitta Giraffe once heard a story from her fellow astronauts that there's an old tomb inside with lots of treasure. One day she can't hold herself back anymore and deliberately breaks the cloister open using a sledgehammer.