Must find plans to make this! -- The reshaping wood pallet ideas with the storage option are the best because they help in avoiding the mess in a room, this idea is a combination as it serves as a couch on wheels as well as allows storing the items.
<<easily add backing to our deck benches>> Pallet Sectional Sofa with Additional Storage Space - 101 Pallet Furniture
DIY Modular Seating - Easy build and you can build it/arrange it to fit your space. For the deck?
DIY Modular Sectional - outdoor patio cushions sprayed with NeverWet Outdoor Fabric!
DIY Sectional for Patio – Self-Installed Seater – 1001 Pallet Ideas