Wall hangings are recurring mirror objects within Tallon IV's Chozo Ruins. They have a highly reflective surface, and their scan states that they do not appear important, making it seem that they are merely decoration. But, they do serve some sort of a purpose, although it isn't crucial to the game's story; should Samus look into one, she will see her reflection. However, if she jumps, she is not seen Spin Jumping as in the Metroid Prime 2: Echoes Multiplayer; the animation remains the same as the first jump.
"An ornate wall hanging with a highly reflective surface. It does not appear important."