Many people use steady state cardio (walking, jogging, elliptical etc.) to burn some extra calories and help maintain a caloric deficit to promote fat loss. A lot of these people also find it tedious and would love an alternative.
So here it is. We'll call it "steady state weight lifting." Not only will it burn those extra calories, you'll promote recovery, tighten up your lifting form, and also get in some extra training volume and frequency to promote muscle growth.
To add a progressive component, record how many sets/reps of each exercise you did. Try to beat your score next time around.
Give this method a try on your next recovery day, or in place of your usual morning cardio.