Is there a front bike light that can be mounted on a handlebar stem? Specifically, a quill stem?

I have a set of thumb shifters (to replace a set of stem shifters) that I'd like to mount on the top of a drop handlebar. What will complicate this is the question of where then to place a front light.

(All of the front lights that I've had and know of were handlebar mounted)

The problem is that I won't have enough room for a light, shifter AND my hand on whichever side of the handlebar the light will be mounted. As far as I know, I'll only be able to choose two of the three.

Anybody here know better?