You might remember the meaning of the character 献 with this easy mnemonic:
Every year we offer ten (十) down boxes (冂) filled with wine to that scary looking deity with the eyebrows (丷). If we don't, we will have a dry (干) year and our dogs (犬) will starve.
Using mnemonics to remember the meaning of Chinese characters like has a huge impact on how long to learn Mandarin it takes.