Rhythm Game: "Busted!" Pull a stick from the jar, clap its rhythm. Pull another stick, clap both rhythms. Continue cumulatively. If you pull the "busted" stick, you have to put all yours back. Kid with most at the end wins.
"What Note Am I" Icebreaker game: According to piano teacher Joy Morin, students try to figure out what note, value, or rhythm they are by asking questions such as, "Do I have a stem?", "Is my note head filled in?", "Am I worth two beats?", etc.
Alcohol Inks on Yupo
Free samples of teaching materials from Teaching-Children-Music.com
Rock, Paper, Scissors, SING is a fun, FREE, PowerPoint music game for reinforcing so-mi melodic patterns! This is a great activity for primary classes to practice sight-sing sol-mi on the 5-line staff!
Non-Elimination Musical Chairs. Cool twist on a classic.
Sing or Dare: "Sing" cards like "sing [the song] while marching the beat" or "sing the song, but buzz all the words 'the'." "Dare" cards like "Name everyone in the room" or "Hug the teacher." (I think I might change the dares to musical things like "sightread a simple song" or "play the melody on the xylophone.")
Music Theory Review (Music Bingo) - site has MANY more music games/flashcards. http://www.susanparadis.com