We have been noticing a lot of rustic, wooden elements added to bedrooms lately. Some look like they have been dragged in straight from the forest and others are finely constructed to become a unique piece of furniture.
If you are looking to add a special touch of nature to your space, try your local lumber yard. Occasionally, lumber houses will carry old pylons and raw lumber for this exact purpose. Most of the time they are drastically cheaper than what you'll find in antique and specialty shops.
Examples via: Elle Decor, Remodelista & House Beautiful