Yes, forgive my imprecise terminology, I'm not as well-versed as I'd like. Like you'd said, you can do them as circuits much in the same way the first part of FL3 is designed, but they use minimal equipment (aka minimal logistics) to do. If done fast enough I think they'd count toward your cardio. You might want to check out Ross Enamait's
site for more ideas. I bought his Never Gymless book and it has exercises listings/progressions and workouts which use minimal or homemade gear. You can also see him doing some of the exercises in the videos he has on site.