You can get a particularly satisfying sound from the tambourine if you bang it on the singer's head. Say the guitarist is winding down the tune, two beats on the Gm9, two on the C13b9, a bar long arpeggio on the Fmaj7. Just as he hits the end of the arpeggio, slam the tambourine up against the side of the singer's head and let it bounce off with a wobbly trill. I'm not certain about the etiquette but it sure is a crowd pleaser.

insincerely, fla