Reddit reviews Recycled Sky Vodka Cobalt Blue Bottle Flower Vase

Yes, seriously. An empty bottle as a decoration is harmless and legal.

A vodka bottle vase could quite plausibly have been:

• purchased as a vase
  
• received as a gift
  
• made from an old bottle legally consumed by the 17–20 year-old
  
  • on private property with their parents or grandparents in Massachusetts
    
  • in a different jurisdiction with a lower drinking age and then legally brought to Massachusetts
    
    So, yes, why are 18-, 19-, and 20-year-olds not allowed to have liquor bottles?