Ha! Here's my mission item list:

Magic Trophy, Fight Trophy, Sport Trophy, Ogma's Seal, Gold Vessel, Ancient Medal, Coast Medal, Guard Medal, Master Brave, Badge, Esteroth, Ahriman Eye, Wyrmstone, Topaz Armring, Zodiac Ore, Silvril, Materite, Leestone, Adamantite, Spiritstone, Amber, White Thread, Chocobo Skin, Magic Cloth, Magic Cotton, Panther Hide, Tiger Hide, Jerky, Chocobo Egg, Eldagusto, Cyril Ice, Choco Bread, Gedegg Soup, Ancient Text, Magic Vellum, Justice Badge, Friend Badge, The Hero Gaol, Edaroya Tome, Encyclopedia, Sketchbook, Stuffed Bear, Rabbit Tail, Danbukwood, Moonwood, Fountain Pen, Earplugs, Crystal, Trichord, Mind Ceffyl, Body Ceffyl, Insignia, Ally Finder2, Loaded Dice, Snake Shield, Love Potion, Sprinkler, Telaq Flower, White Flowers, Magic Fruit, Power Fruit, Vermillion, Ancient Coins, and Helje Key.

Don't try to compete with me. You'll lose.

I had thought that if you hadn't found the mission "The Hero Blade" yet, you might not have had the needed items either.

I beleive you get Cat's Tears for completeing the mission "Broken Tunes"...