Whether or not you have musician’s in your group, learning a song on musical instrument can always be fun as a group.  Have someone come in to teach the group or have one of your members teach everyone.  Wouldn’t it be cool if the youth were 40 years old one day and could credit their high school discipleship group as they place they learned chopsticks?!  It will be then that they also remember many of the other things they learned in that group.