The toy you spin with the sticks and throw in the air?
I used to love that shit as a kid. I was really good at it, too. I used to be able to do all kinds of tricks where you wrap the string in a certain way and build a structure for the thing to spin it. Wrap the string around it twice and you can get some serious spin on it hammering it with one stick and then you swiftly unwrap it once and shoot it in the air so it makes a screeching sound.