On the right is a Dumbek (a traditional drum from the Middle East) and another Richard Waters creation the (what else) Water Drum. The Water Drum is 2 deep stainless steel pots welded together with a round hole cut out in the middle. A small amount of water is put inside, which changes the pitch of the notes as they're played.

Dumbek sounds:

WAV 94k

RealAudio 50k

Below is a set of Bamboo Tong Drums.
Played with mallets, each Tong has a pitch.

Tong Drum sounds:

WAV 86k

RealAudio 30k

Above, on the right, are some of the wonderful sound making creations of instrument inventor Darrell Devore.
Butu are pieces of bamboo, played by striking their bottoms on a hard surface. Finger holes can be covered and uncovered to change pitch.
The Shaker has action that is enhanced by being suspended with rubber bands.
The Wind Wand is a wooden frame with a handle and adjustable cross piece, suspending a BIG rubber band. Sound is made by rotating in a circle or waving back and forth, it makes a multi-pitched (4) whoooooshing sound.
The Groove Stick is a long thin piece of bamboo with many notches cut into one side. Played with a stick, it is similar to the South American Guiro or "Rhythm Fish".
And the Spirit Catcher is a smaller variation of the Wind Wand with a 2nd rubber band. It is capable of 8 simultaneous pitches

Spirit Catcher sound:	WAV 75k	RealAudio 27k
Wind Wand sound:	WAV 99k

Three bamboo Batutu (also called Buzz Sticks) made by Richard Waters. They are usually held in one hand and stuck against something soft but firm (like the palm of the other hand or a knee).

Batutu sounds:

WAV 58k

RealAudio 24k