honestly, the only things i bought before i brought my new puppy home were blankies, a crate, a toy, and that's it. I wasn't sure what she had been feeding him or what he liked. as far as grooming utensils, i haven't even picked anything like that up b/c his puppy cut keeps him pretty well clean. (that, and he doesn't go out unless to pee, so he doesnt get too dirty)
if i had to suggest anything though, it would just be a brush. i dunno