Lunge with MB Overhead Press
This exercise (which I call a combo because it works more than one body part) will work your shoulders, glutes, quads, hamstrings and your core.
Stand with the feet together, holding a lightweight medicine ball in front of the chest in both hands. Lift the right foot off the floor, bending the knee, and hold this position for one count before stepping forward into a lunge. With the bodyweight shifting to the right leg, reach the medicine ball straight overhead. While still in the lunge, pull the ball back to the chest, and bring the front leg back to the starting position and repeat. Do 8-12 reps on each side.