My son who is a banker, has been working from home soon after the pandemic began. He is an exercise nut, (didn’t take after me), who runs marathons and even iron man marathons. He called and ask me to make him a Plyometrics Box which he could use in he limited space office to work out. Made from half inch plywood and stud bracing inside, it is 16×20×24. I used a floor and porch paint on it to be skid resistant. Plenty of YouTube videos if you are interested. Thanks for looking.