Keyword with Association / Fantasy

e.g. To memorize 7 deadly sins.

Sloth / Gluttony -> SG
Lust / Envy / Greed -> LEG
Wrath / Pride -> WP

The Show Girl (who is Slothful and Gluttonous) has beautiful LEGs.
When you see her legs, you will Envy and be Greedy for the Lust.
However, she is introducing Window Phone.
You got Wrath and be Pride due to you have iPhone.

(Just for memorization, no other purpose. BTW, I'm using Android phone.)

Finally, The SG who has beautiful and long LEGs is selling WP.
Just imagine the girl in your mind, and then you will never forget it.

I mentioned it as an example because the Japanese Comics refer them so often.

https://en.wikipedia.org/wiki/Seven_deadly_sins