Black Hole plug (Dia)19mm, Pack of 10

These hole plugs from B&Q are for infilling unused furniture hinge holes.

10/20/50PCS Quick Installation Small Rubber Hole Plugs Round Snap Panel Locking Hole Plug Screw

LUTER 170pcs Hole Plugs, Plastic Cabinet Hole Plugs Screw Hole Plugs Furniture Hole Plug for Locking Hole Tube Furniture (6 Sizes, Black) - Yahoo Shopping

GM Hole Plugs Pack of 10 Small Black Rubber 17mm Wide New OEM 10409379

Push Type Retainer/Bumper - Lexus/Toyota 90467-07211 - 10 Pk. - Shark Industries

100Pcs Silicone Rubber Tapered Plug Kit, High Temp Rubber Hole Plugs for PoV9 - Helia Beer Co

PP00054771 - Rubber Stoppers One Hole - Bottom Diameter: 33mm - Pack of 10

Wood Hole Plugs

Midwest Fastener® 1 Black Hole Plugs - 6 Count at Menards®

Wardrobe rails & fittings