I'm finding more and more Keto friendly products at Costco.
Healthy Noodles in the refrigerator section near the pastas are amazing! I have tried the Japanese no carb noodles before but did not like how slimy they were. These have more soy and they are fantastic.
Microwave Cauliflower rice packets and frozen cauliflower rice in stumble packages. Keto friendly sausage, several different types of snacks (cheese crisps, crispy cauliflower and something with nuts).