You might remember the meaning of the character 党 with this easy mnemonic:
I'm really tickled (⺌) by the fact that instead of chairs, this party has downward facing boxes (冂), and all the kids are running around with food in their mouths (口) and food stains on their arms and legs (儿).
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.