Related Clues:

• Hats, so to speak
• White-sale purchases
• Coffee cup covers
• They'll cover for you
• Shoebox tops
• Tupperware stock
• Cap relatives
• Works on an A-frame
• Urban garden spots
• Shuteye aids?
• Mansard and gambrel
• Coffee bar stack
• Starbucks stack
• Tops of buildings
• Movable tops or covers