We have some great stairs where we do boot camp...any other "outside the box" exercises we can do on them?

Skip a step lunge ups, squat pulses on each step all the way up - same down, w/a few steps between each participant: sideways step up left w/right leg side kick & down x30 sec, then turn & repeat on the other side x30 sec, "dip climb":have each participant get into "dip position", do one dip on their step & reach up behind themselves & pull up to the next step & repeat..., facing sideways:right foot on one step, left on the one just above it, squat deep & side step up to repeat until you reach the top - turn it around on the way down - when finished stay on the side you went down the steps with and go up this way, turning it around at the top & going down that way to complete a full set, alternating single leg squats all the way up - jog down, plank walk/bear crawl up & plank walk/bear crawl backward down, "fast feet"(out/out/in/in) on each step all the way up & diagonal step down into close footed squat on each step on the way back down.... hope these are useful to you!