SAHM how do you entertain your kids who don’t go to daycare?

And how often do you do it? My son is 19. I’m a SAHM and FTM. My husband works around the clock and I don’t drive. Not sure what to do anymore. I feel like I need to constantly entertain him. We go to park 2hours everyday. We read books, we garden, we dance and sing. But to be honest, I’m about to loose my mind! Husband says to put him in daycare but we barely have money to survive and he will willing to pay for it for my own sake. But I don’t want my son to be away from me. I have very bad feelings about daycare, kids getting sick, mistreating your kids and feeding them crap.