We redid our basement stairs, including the landing. The treads now have stair tread carpets, but the landing also needs something (for one thing, it's quite slippery). Do quarter-round rugs exist? Are they maybe called a special name - I can't find anything online. Haven't asked in a carpet-flooring store, as really I want something so small...along the lines of a thin rubber-backed kitchen rug. I need 28" diameter.