'90s mom- preconception exercise

So I am not at the weight I want to be. With the holidays and the cold weather, it's hard to get in the exercise. I have a 2 year old so going to the gym isn't feasible. So what does a girl do? What my mom did in the '90s, a Richard Simmons workout! And omg it is so much fun! My son loooves running circles around me, and he pushed me to exercise even longer bc when I turned it off after a half hour, he turned it back on and said more; apparently he likes the music when he plays with his toy cars. I know this is a pointless post, but I was curious what you ladies do for exercise besides going to the gym?