You will need a playpen to keep your puppy contained in when you are not playing with it and during the night, unless you prefer to use baby gates to section off a room or space in your home. It should be big enough to contain the puppy’s crate, a litter box, some toys and a playing area as well as a dining/drinking area, unless you are feeding all of your puppy’s food during training and with a kong, but the pup still needs access to fresh water.