Wrist Curls (palms up). A nice way to work the underside of your forearms, but use caution as the wrist can get overworked! To decrease wrist injury, use lighter weights, do the exercise slowly, and 'pinch and hold' when the bar is raised.
The front squat is a beast of a move, and is also surprising easier on the lower joints than the traditional squat. it equally helps with balance, strength, and building endurance and flexibility. FRONT SQUATS FOR EVERYONE!