I have rigged up a mount on my fork with one of those skewer nut adapters stubs paired with a Cateye light strap. I don't have a boss on my fork, like some touring bikes. This allows me to use a few different lights I own and mount them on the fork, away from the bars. Also nice for commuting as it's lower so less blinding for oncoming commuters.

Also picked up a fork mount thing, forget the make, but it's German. Allows me to mount a light above my v-brake.