"Sleeping pits" can be achieved without construction by purchasing modular pit sectionals, which are deep-seated sofas that can be arranged into a large, flat surface. Popular, highly-rated options for these versatile, cozy setups are available from retailers like Lovesac , 7th Avenue, and Albany Park. Learn more about the best options in this The Spruce article . The 8 Best Modular Sofas of 2026, Tested and Reviewed