Our treasure basket has all the "non toy" toys. There is lots of kitchen stuff; measuring cups, measuring spoons, garlic press brush, new scrub brush, plastic baster, those small bags of cereal (one of her favorites) and the boxes seperated, more spoons, tuperware, lids. There rest is just random stuff; a new flip flop, old medicine bottles filled with big pasta, rice, stuff that makes noise but she wouldn't choke on, a diaper (funny but she loves it), old remotes, old phones, weekly pull box, a sock, different ribbons, sunglass case, personal tape player, headphones, a couple purses that have different textures, zippers, buttons, and snaps.
Really I just go around the house and look for non-choking hazards that are different textures. When I see that she likes something I try to add it if I don't think that it would hurt her. I try to add somehting new everyday. I swear she likes it better than any of her toys! She takes stuff out one by one or sometimes dumps it and then goes through it. Have fun with it!