As Dragonrain said, definitely find a vet who knows rabbits. Don't just assume that a good dog/cat vet will be able to handle other animals, because it's usually not true.
Also, there are particular types of litter that are very good for bunnies. The web site Dragonrain gave you (rabbit.org) has lists of that, as well as recommendations for veggies and stuff to give to bunnies, and lists of rabbit-savvy vets by area. Definitely a great web site!
I'm surprised to hear anyone considering the possibility of NOT litter training their bunny. It's so easy that I can't imagine why you wouldn't. Flash picked a spot outside his cage that he liked to pee, so I put a litter box down on that spot and bribed him with treats to jump into the box 2-3 times per day for a week. Now, that box is one of his favorite places in my apartment to hang out, and he doesn't pee or poop anywhere else outside his cage.
He also has a litter box inside his cage, though he occasionally leaves one or two poops in other parts of the cage, just to make sure everyone knows that the entire cage is his territory. For instance, there's a shelf in the cage, and one or two poops always appear on it within an hour of me cleaning the cage. But then if I leave them there, he doesn't drop any more up there until the next time I clean them up. So it's definitely a territory thing, not a litter training problem.
As for toys, as Dragonrain said, different buns have different preferences. For instance, I got Flash a set of hard plastic baby keys, because someone here (possibly Dragonrain) said their bunny loved them. Flash just moves them out of his way because they annoy him, then goes back to happily ripping apart old phone books and cardboard boxes, which are his favorite toys.