port huron
Looks like I read this a bit too late, but I go over to Port Huron all the time. I find that Kroger and Sam's Club have a great selection of items. I usually buy cases of Premier Protein shakes (they have chocolate, vanilla and strawberry), Pure Protein snack bars, babybel cheese, laughing cow cheese, Edamame single serve packets, and cases of Powerade Zero at Sam's Club. Lately I've been going to Kroger to buy things like fat free cream cheese, fat free ricotta cheese, carbmaster yogurt (lots of interesting flavours), and black diamond flavoured almonds (I especially like toasted coconut or bbq habanero).
Maybe that will help the next time you go!