Back Squat (1-1-1-1-1-1-1-1-1-1)
Metcon (AMRAP – Reps)
Tabata Circuit
Jump Rope (Singles OR Dubs)
Air Squats
sit-ups
Here are some links to some very reputable companys that sell high quality jump ropes.
http://www.roguefitness.com/conditioning/jump-ropes/speed-ropes