What includes in a complete boxing bag kit?

at first I think just clothes to train and a towel for your shower and a pair of handwraps in case they have you hit the bag should be enough most gyms have small gloves for the bag you can borrow..now mouthpiece your own sparring gloves,boxing shoes and all that are expensive so I don't think there is any need to buy them right away if you make sure you like it and you stick with it they will tell you when its time to buy it most likely when you are ready to start sparring