Related Clues:

• Some museum displays
• 'Monopoly' pieces
• Souvenirs
• Archaeology finds
• They're no longer good on the 'L'
• Venerated mementos
• Mementos from the past
• Pressed flowers, perhaps
• Dig finds
• Symbols
• Arcade game inserts
• __ of appreciation (symbolic gifts)
• They're found in digs
• Subway coins
• Tourist shop purchases