 Bed Bath Beyond Inc. will add Casper Sleep Inc. merchandise to the home goods retailers e-commerce site, app and at select stores, the two companies announced Thursday. Casper will launch its first shop-in-shop at the redesigned Bed Bath Beyond flagship in New York City, which will open on July 22, and bring merchandise to the citys Tribeca store and a Bed Bath Beyond location in Bridgewater, NJ. 