Adding my information for anyone looking for more ideas for new puppy setup.
For a pen, we used this one:
https://www.chewy.com/iris-4-panel-e...play/dp/183628
We choose this one mostly because the breeder used it. The breeder added 2 extra panels to make half of the area a potty area, and the other half "living" space. When JakJak came home, we knew he would be taken to go potty in the designated potty space away from the pen. His potty pads are kept in the bathroom for his use. We used, and still use, the 4 panel option as is. Has worked great! A bit of warning, if your little guy is tall, or on the bigger side, this may not work. The sides are not that tall. JakJak was just shy of 2.5 lbs when he came home, and just shy of 4 lbs now (5 months later). I'll try to add pictures later.
As for lining, we use 2 of these:
https://www.target.com/p/bed-protect...3/-/A-53172175
underneath one of these:
https://www.target.com/p/fuzzy-blank...42#lnk=sametab
Both of the above items were originally purchased when Kaji, my yorkie, was sick and had lost his ability to walk. The lining was super easy to throw in the wash, it never stained, although it is now covered in fuzzies from the blanket.
Both withstood lots of washes, and lots of accidents from a very sick yorkie, and then by a tiny puppy that was still learning the ropes. I still use this combo to this day. JakJak is 95% potty trained, but I use the liners anyway in case he ever spills his water that's in the pen.
I did find a tiny bowl set. Very short stand, nice and shallow, but I can't remember from where.
