Fun fact about the sponges packaged in pairs (one pair contains a gold and silver variety): In Judaism, people often have two sections in the kitchen. A part for the meat products and a part for the products without meat. This to be able to cook kosher. Even scouring pads have been thought of in Israel: to prevent you from cleaning a meat pan with a sponge with which you have just cleaned a pancake pan, two clearly separable colors have been chosen. Completely kosher, these sponges!