I find these wood wall very interesting. Great for the country home.
Here is a creation by Bleu Nature located near Lille, in Northern France. They have a very nice collection of furnitures and lightings. With material like driftwood, pebbles, lacquered wood, and petrified wood, Blue Nature creates unique design.
If a wood wall fits your decor, there is several tutorial on the web to create them and here is interesting links;
Birch poles sliced into disks and glued to plywood panels to create a graphic wall mosaic.
Easy and simple, could be a nice weekend project.
City line - Recycled tree art project