When it comes to finding alternatives to the term "conversation piece," it's helpful to think about what qualities make an object interesting and able to spark discussion. Some synonyms might include "curiosity," "curio," or "oddity." Other suitable options could include "talking point," "icebreaker," or "stimulus." "Showstopper," "attention-grabber," or "eye-catcher," may also be terms to consider. Essentially, any item that is noteworthy, unusual, or intriguing can serve as a conversation piece or its alternative. Ultimately, the goal is to find something that will pique the interest of those around you and generate a lively discussion.