A bag full of goodies to put into your nut cage, items will vary but typically include wooden blocks, clothes pins, shredding material, dried corn cobs, etc., or an all wood mix (pictured) which was designed for our Stainless Steel Nut Cage, the small works with the Treasure Chests too! (Note: you have to OPEN the chest to get the pieces in, the pieces don't fit THROUGH the holes)