The cowboy theme or rather the Wild West and Ranch theme will always be popular in America as it is such an integral part of their past.
Some of the items that can appear on walls are cow skulls beautifully mounted, plaques about those days as well as vintage photos framed or mounted, wagon wheels, lassos, bridles, saddles, ropes, cowboy hats on the wall, slings and other paraphernalia.
As well as the mounted, hung or staged items, there are also many books about cowboys, the Wild West, ranches and ranch life that make wonderful coffee table books.
There are furniture pieces influenced by the cowboy era and blankets, towels, runners and hangings with the same theme.