@dboothe All great ways to save money with your shopping! And thrift shopping and donating is a great way to give back to the community!
I prefer Costco over Sam's club but they do have a similar thing with their Credit Card and cashback.
On the topic of credit cards, I have also been using my Walmart Credit card to shop at Walmart for the cashback.
Not only do they give you a small bonus when you sign up and spend a certain amount on purchases, they also offer cashback on your Walmart purchases.
This year they are also running a promotion where if you pay with your Walmart Credit card using Walmart Pay (in the app) they give 5% cashback on your purchase!