Crate with a mat/blanket/old towel/similar in it. Have at least two so if there's a nighttime accident you can chuck the wet one in the wash and a dry one in the crate.
You can also have extras of crate/bed/mat/floor cushion for pup in any other rooms they many spend time in.
Chew toys. Puppies chew. It is better to have a selection of stuff you are happy for them to chew then have then test their teeth on your furniture. Nylabone or benebone are good, safe brands. I'd start with at least four different ones.
Toys. Puppies need to play. Start with a couple of balls, some squeaky toys, a tug toy and something soft they can cuddle. They'll let you know their preferences. Go cheap in this category if you like as it will all be destroyed eventually. TK Maxx can be good if you have a local one. I also love tuffy toys as I've had good luck with them lasting well.
Food toys. Kongs, white sterile bones, quests, food dispensing toys. I'd have a couple of kongs as a minimum but a variety is always handy. Good for when you want to leave them in their crate for a while.
Food and any treats you want to use.
Bowls. You can manage with one, but I find four works best for me. One for water, one for the meal and one spare to soak food for kongs/to be in the dishwasher/to use if we have a puppy guest. I also leave a travel bowl in the car with a bottle of water and a spare meal but that might be overkill for you (regularly do long drives here).
You might want a mat to pop the bowls on. Some dogs are splashier then others. It's also handy to signal to the pup 'their space' in the kitchen to keep them from being underfoot.
Grooming kit. Brush, toothbrush and toothpaste, ear cleaner, nail clippers, puppy shampoo and an old towel. If you plan to use a grooming service you might not need all this.
Collar, tags and leash. Harness if you like.
Poop bags. Millions of poop bags.
Urine destroyer and kitchen roll in case of accidents.
Insurance. Meds (flea guard, etc).
Treat bag or pouch for you. A food bag will do the same job but it's handy in summer.