If you are wired for a three-way switch, a popular mod is the so-called "Hendrix Mod" (although AFAIK, Hendrix never used it).
Basically, you wire the guitar so the three-way switches between neck, neck and middle and middle pickups. Volume controls neck/bridge volume and a master tone control. The third pot controls bridge pickup volume.
The idea is that by switching the three-way and the bridge volume, you can then get any combination of pickups and get a tone control to tame any ice-pick in the bridge.
I have never tried it, but I keep planning to wire up a guitar this way.
Diagrams readily available on the internets.