Have an outdoors artist come in and do a wall mural of an outdorrs setting. My buddys "man room" has a 4 foot by 16 foot mural of a swamp/river outlet up in Maine. Its awesome and it really sets the room off/ is a great conversation piece. The frame for the piece is a 4 inch birch tree cut in half which goes around the whole mural. Again...its really awesome. He also has all of his mounts in that room (obviously) and a bar (obviously) and a big TV (obvuiously). Another really cool touch...He made the door into the room into a saloon style double door which swings in and out. Another option would be to take a picture of somewhere you love in the outdoors and have the picture made into a wall mural that you can put up like wall paper. There are a number of websites that will do that for you for a price. Hope this helps.