The following is the list of items needed for the Box of Secrets trades in the Knothole Island bonus downloadable content.

"A lovely hairdo" (Cascading Hair): Trade for two Table Wine.
"A rare ranged weapon" (Hal's Rifle): Trade for Pure Experience Extract.
"A rebellious costume" (Black Wheel Gang outfit): Trade for Pretty Necklace.
"A saintly weapon" (Judges Steel sword): Trade for Monk Robes.
"A sexy garment" (Knothole Skirt): Trade for "Marriage And How To Survive It".
"A strong willed weapon" (Staff of Wrath): Trade for diamond.
"A stylish accessory" (Greaser wig): Trade for Eternal Love Ring.
"A weapon of note" (Axe of Disharmony): Two Lutes (can be obtained from the Bowerstone general store).
"An evil weapon" (Wretcher's Blade): Trade for three Crunchy Chicks (can be obtained from general stores or the gypsy camp general goods seller).
"Barbaric garments" (Brodican Warrior Queen Outfit): Trade for two "Murgo's Big Book Of Trading" (can be obtained from Bowerstone bookstore or furniture).
"Barbaric weapon" (Brodican Mace): Trade for Regal Purple Dye (can be obtained from clothing or beauty vendors that stock dyes).
"Murderous attire" (Assassins Outfit): Trade for two Puny Carrots (can be obtained from food sellers in Bowerstone Market or Bloodstone).
"Vile attire" (Chasm Outfit): Trade for two Crucible Peanuts.