Neck 4 - way neck work with towel, 4 - way neck work with headstrap (using slant board). (lasting-weight-loss.com)
Medicine Ball Russian Twist Standing Cable Twists Standing Cable Chops Side Bends on a 45 Degree Slant Board Moving Side Planks (ab-core-and-stomach-exercises.com)
For Reverse Crunches do your first set like before, but on the second set lie on a slant board which is on a slight incline. (weightrainer.net)