21 Household or kitchen utensils and containers, not of precious metal or coated therewith, namely, pot and pan scrapers, rolling pins, graters, sieves, spatulas, strainers, turners, whisks, skimmers; containers for household or kitchen use, not of precious metal or coated therewith; combs and cleaning sponges, scouring sponges, scrub sponges, sponges for household purposes; washing brushes; brush making materials; articles for cleaning purposes, namely, cleaning cloths, cloth for wiping or dusting, dusting or cleaning cloths, polishing cloths, washing cloths; steel wool for cleaning; unworked or semi-worked glass, except glass used in building; glassware, namely, beverage glassware, charms for attachment to beverage glassware for identification purposes; porcelain and earthenware not included in other classes, namely, porcelain mugs and dishes, earthenware mugs and dishes