Wind Chimes

Wind chimes produce inharmonic (as opposed to harmonic) spectra, although if they are hung at about 1/5th of their length (22.4%), the higher partials are dampened and the fundamental is brought out.

 This is common practice in high-quality wind chimes, which are also usually hung so the centre ball strikes the centre of the wind chime's length. Frequency is determined by the length, width, thickness, and material.  There are formulas that help predict the proper length to achieve a particular note, though a bit of fine tuning is often needed.

Wind chimes are thought to be good luck in parts of Asia and are used in Feng Shui. In Japan they produce pleasant ringing sounds and are hung by the windows during hot humid summers in order to bring cooling relief.

Source:  Wikipedia