The main factor which boosted industry and trade under the Ayyubids was the new interests Europeans developed when they came into contact with the Muslims. Commodities included incense, scents, fragrant oils, and aromatic plants from Arabia and India, as well as ginger, alum, and aloes. Likewise, Europeans developed new tastes in the matter of fashions, clothing, and home furnishing. Rugs, carpets, and tapestries manufactured in the Middle East and Central Asia were introduced to the West through Crusader-Ayyubid interaction. Christian pilgrims visiting Jerusalem returned with Arab reliquaries for the keeping of relics. In addition, eastern works of art in glass, pottery, gold, silver, etc., were highly prized in Europe.