Depending on the hair coat, either a soft hair brush or slicker brush would be best. The slicker brush is a wire type brush is very effective in combing the hair yet as the name implies is not harsh to the skin. Dog beds are available, but it may be best to wait until the puppy is larger to accommodate the size bed . A soft blanket or towel will suffice for the beginning. It is never too early to train your puppy to accept a collar.
Many collars are available today that are adjustable to allow for growth.
Consult your veterinarian about the safest collar to use. Collars also provide a place to put forms of identification such as a tag with your name and phone number. Puppies can be bathed every two weeks for cleanliness and fleas. Your veterinarian can provide handouts on proper bathing for puppies. In the wild, dogs and wolves live in dens or caves.