Like ninja said, it's hard to beat a good headlamp. They have different features like different colored lights for night fishing, uv lights for inducing glow, etc. so figure out what exactly you want out of it and go for it!
wallworld has the if you dont wanna wait for shipping.
although i hate wallyworld ones. they usually only last half a dozen trips or so before something breaks or they drop and break. i almost wouldnt mind paying like 75 for one thats a bit more tough. i also prefer the headlights with the strap that goes over the top of the head as well. they seem to stay on better than the single around the head and ears strap.