Jumping on a BOSU-ball is a great way to get your heart rate up and you can also do some leg work-outs with jumping, but you must be careful when jumping on a BOSU-ball, because if you have weak ankles, you can easily roll your ankle. You also have to have strong joints, because it puts pressures on the knees, as well as good balance, because you don't want to fall over. So one thing you can do is literally just jump on a BOSU-ball. Just like this. You'd be getting a little calf work-out, getting your heart rate up, and it's kind of fun.
Another one is a squat jump, so you would just squat, jump and then squat off. You can also do one where you're jumping in and out. So you would go in and then out, keeping your knees slightly bent or you can squat, in and out. Ten another one you can do with jumping is, you can bring one foot one, one foot back in a lunge position, and you're going to come down in a lunge and then jump up. Down in a lunge and then jump up. This is really going to work your leg, so you're going to feel this in your quads, your hamstring, your inner thighs, your outer thighs, everything.