you can use the 555 for a PWM circuit to control the speed of a motor.
Turning things. Round.
Substitute motor for led, or relay and motor/power source for led.
but thats not answering his question - thats just pointing him towards finding his own answer! GEEZ! You're not feeding it to him on a silver platter!
My silver platter is out being polished for Christmas dinner. It was terribly tarnished and scratched during Thanksgiving dinner. Let him borrow yours!