Tuning forks can be used as stand alone instruments or, more likely, in combination with other healing instruments.
The purity of their tone and their portability make them ideal to work around your aura. And though all parts of your body are in effect resonators, the sacrum, sternum, and cranium work especially well. The forks work well on an off the body very well with the nervous system, etheric fields, and inducing relaxation.
Tuning forks come in all different frequencies: both weighted and unweighted.
Solar Harmonic (Pythagoras)
Ohm (3 various frequencies)
Brain wave tuners
The combination and usage of these and other works make for an efficient means of promoting healing, especially with other healing instruments.