Go to Costco purchases

Naked chicken nuggets (just like chick fil a in the air fryer)

Toilet paper & tissue
Kirkland cold brew
Wine & liquor
Occasional beef to grill

Boneless skinless chicken thigh pack
Eggs
Coffee pods
Tri tip
Chuck roast
Ground beef
Pork loin
Frozen dumplings/pot stickers

Dog food if you have a dog

Prime briskets and 3 pack of baby backs with the membrane already removed.

Chicken flautas are $$$$$

You gotta ask for it, but the Prime Sirloin Cap roasts are usually in the back with the butcher. Costco cuts these into strips and machine tenderizes them for some reason (like all of their steaks).

If you ask the meat area employees if they have a pack of it in the back, they will look. Don’t always have it, but if they do it’s 3 sirloin caps to a package, so expect to pay for about 4-5 pounds of meat.

The best thing is, these things already have the tough part removed from the traditional sirloin cap, so you can buy and slice into steaks.

This cut is no good prepared beyond medium rare, whether as a roast or a steak. But it’s the most flavorful beef cut on the cow when properly butchered and prepared. And I love ribeyes for reference

Probably easier to compile a list of "do not buys"

Coffee
Salmon
Frozen Green Beans
Bacon
Butter
Chicken Pot Pie
TP

The Korean Gyoza dumplings are legit.
Much of their freezer section is really good. I always stock on cheese and meats too. I like the salmon but no one else eats it so I wind up throwing so much away.