Joey didn't really care for the kong, but chew type toys are really important. He loved those plastic teething rings for puppies. I also love a car seat that we used as a crate/bed for overnight sleeping. His regular crate was too big for a puppy, and his carseat was just the right size to prevent him from peeing on one side and sleeping on the other. This really aided housebreaking. Here's a picture of it.
Snoozer Pet Products 86 - Wheel Around Travel Pet Carrier in Red
I took some receiving blankets, and had Joey's breeder rub mama and I kept all but one blanket in a plastic bag. If he would soil that I would get out another blanket and add the freshly washed blanket to the bag to acquire mama scent again. I think this really helped with home sickness, and soon my scent was the one he liked. I've never seen a play pen like that, it really sounds like a good idea, and the price is great, I wonder if they could get out the bottom? Your other picture doesn't open. Don't forget shampoo and conditioner, dog's have a different pH, and need to use products made for their skin type, I like the Biogroom products.