Walk to the park or somewhere with a chair/bench/step and get this workout in. I did it while Ellie played at the park the other day, and it was the perfect little circuit.
Perform 10 reps of each move, and then move down to 9 reps, 8 reps, 7 reps... all the way until you're at 1 rep per move. Your leg and arms will be burning! It's good to remember that a workout doesn't have a be complicated. Keep things simple and get it in!