Turn your tone control into a dual-purpose tone mod
There are a lot of modifications you can do to a stock guitar to greatly alter the sound, such as using tapped pickups, rewiring the tone control, changing pickup phase, etc. The following schematic shows a simple way to obtain two different tone different tone control options from a single tone control.
Hook up two different capacitors (the values shown are suggestions; adjust to taste). Turning the control clockwise connects to one capacitor, counterclockwise to the other capacitor, and centering the control effectively takes both capacitors out of the circuit. The tone control can range from 250k to 1 Meg. The higher the value, the more you can be assured that the center position does indeed take both capacitors out of the signal path.