In reply to frank hill:
Frank
Took my daughter to Porth Clais. As Andy says I think its easy to get to, theres a big "trough" behind routes like Harbour Crack, Red Wall that helps stop them getting too close to the edge. I just lowered her down and she climbed up. Added bonus was seeing the seals watching her! What about Craig Caerfai, not far to go, beach nearby when their bored and you could top or bottom rope (lower them down the gully). Grades more at HS, but slabs, so not too intimidating (Mildred Mindwarp).
Have fun
Chris