As a longtime employee, I think Kirkland Signature slippers and Panera Bread Southwest-style chicken soup are two of the best things to get at Costco right now. As a longtime employee, I think Kirkland Signature slippers and Panera Bread Southwest-style chicken soup are two of the best things to get at Costco right now. Veronica ThatcherAs a longtime employee, I think Kirkland Signature slippers and Panera Bread Southwest-style chicken soup are two of the best things to get at Costco right now. As a Costco employee of 20 years, I'm constantly scanning the warehouse shelves for great new products. Here are nine of the best things I'm seeing on shelves this month.