I found this idea here: http://www.newtunings.com/kidmid/hellonamegame.html
I suggest you start with getting a steady pulse going, of the “knees click click” variety before you play the game.
This is a cut-and-paste from the site:
I start: “My name is Heather and I like cheese
Everyone echoes this: “Your name is Heather and you like cheese.”
“My name is Andrew and I like pizza”
“Your name is Andrew and you like pizza”
It’s a good exercise for 8-12 year olds in keeping a steady beat, fitting
words with the beat, coming in at the right time, individual speech etc.
It also helps you learn their names! You can have a different category for
three weeks in a row, and have a good chance of memorizing their names
before too long.