Just click on one of the buttons and move your mouse around to see a mouse trail. To see another one click the green flag and then click the one you want to see (I know this is really inconvenient, I'm working on it). Give me ideas for different trails in the comments and I will probably use them! Enjoy!
Feel free to use these different ones for your projects, just give credit. Tysm to the Scratch Team for their INCREDIBLE tutorial.