For me it's hard to say exactly because I use so many things for my rituals.. I use so many things such asnatural items, such as plants and minerals, or on amulets and talismans . Some examples would be crystals and other gemstones, Rabbit's foot and other good luck charms, religious symbol jewelry , horseshoes, etc. These are reputed to work without any input or belief from us, and these practices are as old as time.
They have intristic power for me symbolically speaking as I firmly believe.If these items had no intrinsic power themselves, all we would be engaged in would be creative visualization practices such as those taught in certain meditation traditions or those popularized by The Secret and The Law of Attraction - there would be no natural or folk magic which honors the natural powers of plants, minerals, and animals. A fascinating topic - not one that can be developed even in part within these few lines.