GREAT kindergarten activity for music class! Definitely trying this one! You could use any song and just tell them when to pass and when to play (on the beat). This is a fun way to let them play several instruments in one class.
O For Tuna Orff: Compose Yourself with Boomwhackers!
Orff Bucket routine with several teaching videos. Totally doing this with my kids for our stomp/found instruments/science of music unit. You can do a similar activity w/ the kids and found objects AND collaborate it with language arts.