Related Clues:

• Do cover
• Stetson or homburg
• Derby or deerstalker
• Fedora or cloche
• Mat for a glass
• It gets passed around
• Beret, for example
• Bowler, e.g
• It may be tipped (h)
• One of multiple jobs, metaphorically
• Prop for a magician
• Tam or beanie
• Receiver of donations?
• Bean cover?
• Uncle Sam costume piece