Possible Clues:

• Cup companion
• Dressing right for part of the service
• Piece of crockery, maybe flying
• If flying, it would have alien pilots
• It's under a cup, typically
• Reportedly one might provide alien craft?
• Crockery may be flying!
• Part of a tea set
• Cup supporter’s impudent behaviour? Right!
• Put the last of 15 across on this, with a biscuit on the side maybe