What are some mnemonic tricks that you learned for memorizing specific information?

There are only a few that I can think of.

I was taught how to associate the lines on a musical clef with their notes from the phrase Every good boy does fine. (E,G,B,D,F) and the letters for the spaces spells face (F,A,C,E). I never found this very useful. It was easier to use the fact that the letters were sequential as you move up and down the scale.

To remember the names of the Great Lakes, think of the HOMES around them (Huron, Ontario, Michigan, Erie, Superior).

I was taught a phrase for remembering the resistor codes for electronic devices, which was very politically incorrect and which I refuse to repeat. You can find it at the end of this list of similar mnemonics.

What are some that you were taught?