It is an appealing question. But, do you really have to put something on a wall? If you see at the historical publications from the history, you will notice that they have continually put something on their wall space, even when people lived in a cave, they painted their wall surfaces and put many simple decorations including plants.
It is a inquire commonly requested by lots of individuals who are exhausted of their old-fashion appearance of rooms. Winter is an excellent time period to make some significant changes in the appearance of the interiors to feel better while the cloudy days and short day.