You can do some housework when the child is asleep, such as cooking, washing dishes, mopping the floor and cleaning. The child is so old, you must not leave the child alone at home, or there will be a big problem.
A one-and-a-half-year-old child will be a toddler and babble. You can accompany him, encourage him, share the joy of being a parent and watch his every bit. Everything is worth it.