Try calf raises. Either on a slightly raised edge or even feet flat on the floor, alternate standing on your tip toes and lower yourself back to flat footed. They're easy unweighted, so do them as a burnout after a run or leg workout. I wouldn't advise doing it before a run, I got a nasty Charlie horse/cramp half way through a mile, and it sucks lol.

You also can do squats, basketball shots, box jumps, jumping lunges, jump rope and stairs, stairs, stairs

Or sprints on the balls of your feet, those are pretty gnarly

Donkey calf raises, calf raises, barbell calf raises,  dumbell step ups, jump rope. And low body fat.