Install wood paneling in the shade and grain style of your choice on a single wall. This will create an accent wall similar to those created with an eye-catching wallpaper or paint. This allows you to bring a slight log-cabin quality to your home, but without it seeming overwhelming.
Paint your remaining walls a color that complements the accent wall. Frame all your paintings, prints and photos on these walls in wood frames that directly match the wood of your accent wall. This will help bring the look together.
Drill real wood branches onto decorative L-brackets above your window frames to use as curtain rods. This subtle detail will bring a sense of the forest into your home.
Hang a vintage wood door, window frame or even a headboard on one of your walls as an alternative to standard wall decorations. Any of these items will keep with your theme, yet add a degree of shabby-chic sophistication.