Forgot that one band I saw in Mountain View, AR had a fellow using a sheet of poster board, which was held in both hands and crinkled in time to the music. The Carolina Chocolate Drops has a percussionist who delicately taps on a CD-ROM on one number and there was a percussion player in another band who rhythmically dangled a set of keys. Here in Mountain View we also have several spoon players and several mouthbow players. Those instruments are not that unusual here.