Plywood is usually the sign of a work in progress, but as this living room proves, it doesn't have to be. For an inexpensive way to cover your walls, you could consider using the material as an off-beat option... (I think it would be a good attractive alternative to tongue and groove walls inside a tiny house - particularly if you play with the stain colours a little bit. -RB)
Thermostats and smoke detectors have a way of being in the worst spots when it comes time to hang framed pieces. That didn't stop this homeowner from filling the wall with framed art and photos. Look at how those fixtures blend right in.