Rows of matching Billy bookcases from Ikea work well here. Consider that the books and accessories offer the pop while the bookcases provide the background. (contemporary living room by Smith & Vansant Architects PC)
A big sauna with a huge window looking out on the forest and the outdoor hot tub that's big enough for many people to warm up from the cold. This could also be used as a cold pool for dunking after sweating in the sauna.