These cup hooks from B&Q are ideal for general purpose use.
25pc Picture Photo Frame Lamp Light Cabinet Plant Curtain Net Wire Ceiling Eye Bolt Eyebolt Screw
Cup hooks, square hooks, S hooks in many sizes and finishes. — A&H Brass
White Medium Cup hook (L)40mm, Pack of 25
10/20pcs Square Bend Hook L Cup Hanger Screw-in 7-shape 20-40mm Wall Mount Picture Photo Frame Lamp Light Eyescrew Zinc-Plated
Cup Silver Hooks, Hardware
L Hook - 1-1/2 Brass Plated (100 PER BAG) H561A-BP
Carbon steel Medium Single Hook, Pack of 2
White Medium Cup hook (L)40mm, Pack of 25
White Medium Cup hook (L)39.5mm, Pack of 6
Zinc Plated Screw-in 'L' Hook 40mm x 4mm