Check out the custom couch designs that Way Basics made for HOMErgent! The zBoards use a slot design that allow these pieces to slide together without any tools, hardware or even adhesive.
HOMErgent is creating a new kind of shelter called the Flexayurt™, where green building and cleantech innovation meet extreme portability for remote off-grid housing. HOMErgent products ship flat-pack for efficient volume deployment, assemble/disassemble as quickly as tents, and provide comfortable living environments featuring extreme insulation hard walls, furniture, lighting, ventilation, heating, and other modern conveniences.
www.homergent.com