Octavator Percussion Tubes Caps

Placing Tube Caps on the higher octave tubes, creates the same tones as the bass octave tubes; Placing them on the bass octave tubes, takes it down another octave, making a 3-octave range possible

Play the tubes as usual or hold them vertically and tap on the floor, etc., as a "stamping" tube.

Octavator Tube Caps
Put one of these caps on the end of a Boomwhackers Tube and presto- boomo!, youve lowered the tone by an octave!  (Thats 8 notes if youre counting.)