Can we get some mnemonics for jukugo words whose kanji have multiple readings?

[wunderbunny]

Fun with 人 and じん vs にん

So I figure this might help those that have trouble knowing when which reading is reasonably possible, outside of purely memorizing each word (which i imagine a lot of us have done). It has helped me be more thoughtful in working out the right one and putting the two endings into a more conceptual space in my brain.