You might remember the meaning of the character 法 with this easy mnemonic:
You might think that you can do whatever you like on your private (厶) land, like spread droplets (氵) of poisonous baits for that annoying cat or dig holes in the earth to trap trespassers. But you might be breaking the law.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.