Most people mentioned many of the things that you will need.
I've got crates up the wazoo, so crating wasn't an issue - though finding one in my house ok for an 8 week old pup is a lot different in size than what fits my 95 lb dobe
It may sound silly, but one of the only things I had to buy was a collar. I have big dogs right now, and I haven't had a smaller dog in awhile - so I don't have anything but adult dobe sized collars, and nice leather leashes. I don't want puppyface chewing on my nice leashes, and she will need a collar of her own (or 12), so I had to get some just for her.
I've got toys as well, and enough bowls, but I also had to get a smaller water bowl since she won't be able to reach the big dog bowl for... ok, like a month
Silly things I still need to get is a personal training bag for pup, a pup sized db for her to play with, and she will share clickers, etc with Rah.
I've also started to gather my posting supplies, I've got my Zonas tape, my powder, just need to get the foam.
When is your pup coming home?