TRICEP DIPS: these are great because they don't require a gym. Do them anywhere
Facing away from a bench or chair place hands about shoulder width apart. Lower yourself towards the ground and then using your triceps to push yourself back up. During the exercise try and keep the elbows as close as possible. The further your feet are away from you the harder they are. You can add a DB or plate on your lap for a little extra challenge
I did 1- minute Jump Rope between all my tricep sets today.