Mnemonics / Acronyms

These are what I like to call short cuts or ways to remember different things that you may get confused.  We started going over these the other day at worked and laughed at what some of the different sayings were.  Here are the ones that I liked and I already changed on of mine to be a little cuter.

North=Never
East= Eat
South= Sour
West= Watermelon

Multiply by 9

• Hold both your hands up with palms facing you. Number the fingers from left to right as one to ten.
• Now hold down the finger of the number you want to multiply by nine. In this example, we are going to multiply by eight, so the eighth finger is held down.
• The fingers to the left as the tens and the fingers to the right are units. In this example, there are seven fingers to the left (marked blue) and two to the right (marked red) which makes 72.

This one I learned for music classes

Are there any you use that I should add to mine for future teaching? 
I know there is one on the planets but Pluto was taken out of that mix.