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If getting cozy is your goal, try layering your seating solutions with pillows and cushions intended for indoor use. Soft, natural materials feel the best to the touch, but keep in mind that you’ll need to put these away whenever it rains to avoid ruining them.  It may also be a good idea to make blankets available for those unexpectedly brisk evenings. If you decide to accessorize with items that aren’t intended for outdoor use, keep a small storage container nearby where you can stash them quickly when the weather takes a turn for the worse. Make sure the rug you get is made from a synthetic material, such as polyester, nylon, or acrylic. Unlike cotton and similar natural fibers, synthetics aren’t susceptible to mold and mildew. They also won’t fade when exposed to direct sunlight, meaning they’ll retain their original vibrant color season after season.  Certain moisture-resistant natural fibers like bamboo, hemp, and seagrass are resilient enough to handle heat and moisture, but they’ll still deteriorate faster than synthetic alternatives. Stretch a tape measure around the square or rectangular section of your deck closest to the center to determine what size rug will look best in your space. Make use of the blank space on the exterior wall of your home by covering it with paintings, small sculptures, or other visually-interesting mounted pieces. Outdoor wall art is a unique touch that’s guaranteed to turn heads and make your home stand out.  Place paintings and other traditional art behind glass in treated wood or stainless steel frames to prevent rotting and rusting. Hunt for pieces of architectural salvage art at your neighborhood antique store. Architectural salvage is ideal for making any drab deck more aesthetically-pleasing, as most pieces are weather-hardy and crafted for longevity. A standalone fire pit can make a charming addition to your deck, especially once fall arrives. Lay down a grid of paver stones or a heat-resistant fire mat on the surface of your deck to protect it from the heat. You can then begin shopping for a fire pit that fits your deck’s specific dimensions, as well as your own personal tastes.  Before you begin comparing various models, consult your local building codes to find out whether it’s legal to add a fire pit to a deck where you live.  To prevent potential fire-related accidents, select a nice central spot for your fire pit that’s as far away from your home itself as possible. If you would prefer something smaller in addition to or instead of a full fire pit, you could make a tabletop fire bowl.
Pile your furniture with extra pillows to make it more comfortable. Put down a weather-resistant rug to tie your deck decor together. Hang some chic wall art to serve as a conversation starter. Add a fire pit to continue enjoying your deck as the weather cools.