Found this at work today, left by the overnight employee. It’s solid all around. No openings at all. Hollow glass, gold trim on one end. Life Hacks Smart Gadgets — 2025-02-21 Found this at work today, left by the overnight employee. It’s solid all around. No openings at all. Hollow glass, gold trim on one end. Any ideas ? Answer: “Glass syringe plunger. We have them at work.”