A.S.
Do the kids watch American Idol? They could pick one of their favorite songs, dress up and put on a show. Some of the family members could be the judges. You could probably download some AI logos and print their names on them, just to make it look official. My girls are 5 & 3 and they love to dance and sing when we watch American Idol!!
Have fun, what ever you do will you will have a blast!!