Calves = Wednesdays
I will start with Toe Presses OR Standing Calve Raises, (I alternate every week) then for my 2nd exercise I do Seated Calve Raises. I do 4 - 6 total sets.
Traps = Wednesdays
I do 2 - 3 sets of either dumbs OR bar shrugs.
Forearms = Sundays
I usually do the same thing for forearms every forearm workout, but I will skip forearm workouts here and there due to risk of over-training, and sometimes I just don't feel like doing direct forearm work. When working other body-parts, while you hold the dumbbells and barbells, you work your forearms, so because of that many people don't like direct forearm work. I do, but not all the time.
I start with seated wrist curls (bar) for 1 or 2 high rep sets ... high teens. Then I do 1 or 2 sets of reverse wrist curls (bar). I do this right before my biceps workout.