Go outside and run: 10 minutes out your front door. Once you hit the ten minute mark, turn around and get back in no more than 9.
Indoor trainer of a sort: Doesn't matter if its a treadmill, stationary bike, or a rower. Do this:
10 min steady
10x10/50 that means 10 seconds all out bust a lung followed by a 50 second recovery stroke. Do that 10 times
Done.
If you don't have any indoor stationary equipment, swing a kettlebell or dumbbell or even a pillow case with a couple sugar bags inside
10 sets of 25 swings between the legs.