KALONA — A conversation about missing food container lids has turned into a growing business — shipping about 600 plastic lids out each week. Mary Dunn, one of three founders of the Lid Store and More in Kalona, was frustrated when she couldn’t locate plastic replacement lids for her Pyrex glass dishware. “My brother, Robb Flagg, is an entrepreneurial type and wanted to know more about this problem and if others were having it,” she said.