Note Race Game - I like the idea of the fabric mat with ribbons that one of the commenters suggested
Origami Ideas│Origami - #Origami
Kids Orchestra Movie, 30 minutes. Good basic introduction to various info about music- defining terms, instrument groupings, etc. Graphics are lacking but info is good.
Note Value - SproutBeat
Some pictures of the various instrument families.
Worksheet/ Quiz on musical instruments
Instrument worksheets (good for a whole class SMART Board activity too).
Excellent lesson and activity ideas.
Orchestra Instruments - 3rd grade - Beth's Notes
Mrs. Stucki's Music Class: 10 Fun Music Center Games