A wooden piano key holder for décor in a living room can be a charming and functional addition to any space. Here are some features and details you might consider:

1. Material: High-quality wood like mahogany, oak, or walnut can provide durability and a classy aesthetic.

2. Design: The key holder can be designed to resemble piano keys, with black and white keys alternating to mimic the appearance of a piano keyboard.

3. Size: Consider the size of the key holder to ensure it fits well in the intended space. It should be large enough to hold keys securely but not too bulky that it overwhelms the room.

4. Hooks: Install sturdy hooks on the key holder to hang keys conveniently. The hooks can be made of metal and spaced evenly along the length of the holder.

5. Finish: Choose a finish that complements the décor of the living room. Options include natural wood finish, stained, or painted to match the color scheme.

6. Mounting: Ensure the key holder comes with mounting hardware or instructions for easy installation on walls. Alternatively, you can opt for a freestanding design that can be placed on a shelf or console table.

7. Functionality: Besides holding keys, the holder can feature additional storage or organizational elements such as a small shelf or compartments for mail and other small items.

8. Customization: Some key holders may offer customization options such as engraved initials or personalized messages, adding a unique touch to the décor.

9. Quality: Look for a well-crafted key holder with smooth edges and a sturdy construction to ensure longevity and safety.

10. Versatility: Consider whether the key holder can blend seamlessly with various interior styles, allowing flexibility if you decide to redecorate in the future.

By incorporating these features and details, a wooden piano key holder can serve as both a practical solution for organizing keys and a stylish accent piece for the living room décor.