+1 to Morgie's front light.
The picture doesn't show how nice and small it is.
Yet it's still brighter than a couple bigger headlights I have.
That cateye rear light is pretty good, but I use it as a secondary since it only has three LEDs.
This one with 5 LEDs is awesome and bright, and still really cheap.
http://www.cateye.com/en/product_detail/267