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Concrete Wall Hooks Large - Supports 30lbs - Picture Hangers for Brick Wall - Invisible Plastic Hardwall Hanger for Pictures Frames, Art, Clocks, Etc. - Amazon.com
Amazon.com: Antimbee 10-Pack All-Purpose Large Adhesive Hooks for Hanging, Heavy Duty Hold 37 lb(Max) Waterproof Stick on Wall Hooks for Organization : Home & Kitchen