You will need a bed that can be washed, potty pads if you are going to train to those, a harness and leash.  Usually a good idea to keep them on the same food they have been on for a while. An X-pen to confine them while you are potty training. Might be good to get some Nutri-cal depending on the age of the pup.  And toys that are safe to chew on. They also like a blankie that is washa le as well. Maybe some  Natures Miracle for cleaning up after accidents.    
Really good advice to keep them confined until 100% potty trained.    
Enjoy!     
				__________________  .      Cali    , and Cali's keeper and staff, Jay No, not a "mini" Yorkie - She loves to motor in her Mini Cooper car          |