Hello,
Obviously you have the basics for example bed, toys, food bowls, puppy pads and collar? I, myself have recently rehomed an 8 week old Border Collie who is now 11 weeks old, I found with him, unlike my other puppies I've got he needed more stimulating toys, for example kongs. Filling them with cheese and tasty little tibits are always useful because Border Colllies need their brain excercised as well as physical exercised.
I would also recommend that you buy a good quality puppy crate. This protects your furniture from chewing, which i have found is a common problem with teething pups.. eespecially border collies.
I hope you enjoy your new puppy as much as I am enjoying my Ben.
