A couple things you can do are:

1.) Circuit training is great for working your muscles and your cardio at the same time. For example today i did this with very little rest between exercises:
Upper Body (Circuit)
Push Ups..................4 sets...15 reps
Chin Ups..................4 sets...5 reps
Lateral Raise.............4 sets...7 reps
Zottman Curls...........4 sets...8 reps
Rope Pressdown........4 sets...8 reps
Crunches..................4 sets...16 reps

This was jus tfor my upper body, but you could also make it into a full body routine.

2.) Burpees: Bodybuilding.com - Ross Enamait - Burpee Conditioning - No More Nonsense!

3.) Tabata sprints tabata sprints | CrossFit Litchfield Park