Costco's baked goods, prepared dishes, and steaks are all great options for entertaining.Jill RobbinsWith my executive membership, I get all my essentials for hosting parties at Costco.Some of my favorites for entertaining include Costco's wine, steaks, and prepared main dishes.I also love picking up charcuterie-board ingredients, desserts, and flowers for parties.I usually shop for my family of four at Costco, but I especially love visiting the retailer when I want to throw a great party.My executive membership costs me $120 a year (it will soon be $130) and is worth every penny.