But, these adorable doggie duvet covers from Molly Mutt offer at least a reminder of your presence. They’re designed to be used with a “stuff sack” you can fill with old clothes and blankets, so your pooch can curl up with the scent of his favorite people. Also a nice way to give new life to a beloved old dog bed that has lost its charm for you but not him. Machine washable. Made with 100 percent cotton canvas, fully zippered, in a huge variety of fun fabrics. Prices start at $20 at www.mollymutt.com.