A single pendulum hanging from a wide wind catching element rather than a string. (see link for the basic concept) the pendulum strikes an array of tuned bells or strings as the wind imparts motion to it. Likewise, the circular array of bells or chimes can swing separately.
The sand in the example
link is flat, but the percussive elements in this would necessarily be arranged in a hemisphere or bowl shape to match the path of the striker pendulum. As more motion was imparted to the striker pendulum, notes closer to the perimeter would be played, perhaps reflecting a more crescendo sounding array of notes. More wind, more exciting like.
The interesting part of this is that the bells, strings, chimes or whatever would be arrayed keeping in mind that random patterns would be created like in the video shown. As the pattern progressed, so would the melody. Unlike regular windchimes that are completely random, these would be changing sequences arranged such that different melodies could be played.
ADDENDUM: Make this a two part deal, a hanging pendulum and mirror image to that a counter weighted upright pendulum like in a metranome strumming the other side so you get the effect in the other link.
ADDENDUM 2: Could have this in a sphere with the axis of the two pendulums in the center. The wind would rotate it around and hit the circular bells that make up the sphere in random sequences of notes.