I love my Kwigy Bo Alex bag for going places. It looks like a purse and you can take them anywhere.
I have a metal exercise pen for my two when I want them to be near me but safe from running into the road (Examples: weeding in the front yard, doing work outside, etc).
I have a large metal crate with Khloes bed, food, water and per pad in it. She stays in this when we are gone because she will otherwise potty on the floor (she's almost 7 mos).
I think it's good to splurge in things like brushes, shampoos, food and treats
I feed Blur Buffalo but am going to start rotating different foods into their diets (Orijen, Innova, Wellness etc).
Good luck with your puppy supply shopping! It's a lot of fun
