I made my own for the plural rules, and made up my own motions. They look a little different than the official ones, but my students didn't care.
Last year, I used power pics at the time I introduced the concept. This year, I am using them to front load. For example, (yes, I did the example popper motion as I typed) our measurement units in math are not until the spring. They move incredibly fast, and the kids struggle to do conversions between units. I decided to start introducing a few of the measurement PPs (Quart, cup, pint, etc) now to see if the advanced exposure would help them in a few months. Often, my students are like lab rats- I love to try new techniques on them!
Happy November!