They sell these things called zen alarm clocks that I have found to be very helpful. They are in a triangle shape with a simple silver bell running along the bottom part of the clock.
How it works is it rings the bell repeatively at a gradually increasing rate so as to wake you up gently.
Not only has this helped me in remember my dreams, but it's also a much more pleasant to wake up to in contrast to the normal annoying beeping sound of a regular alarm.