Divination is the art of using occult or religious rituals or tools to foretell the future or gain insight into a matter. Some popular examples of tools/items used for divination:
Tarot. Tarot cards have been in existence since approximately the 15th century, when they were used for card games in Europe. Beginning in the 18th century, these cards, often beautifully decorated, have been used for divinatory purposes. While many different decks exist, the most popular (and probably most recognized) is the Rider-Waite deck.
Tarot decks commonly consist of 78 cards – including a “major” and “minor” arcana. The major arcana, or trump cards, are numbered 0-XXI, and depict various images such as the The Fool, The Magician, Death, etc. The minor arcana consists of four suits (usually cups, wands, pentacles, and swords), each suit numbering from 1-10 and also incorporating four face cards (page, knight, queen, and king).
Rune stones. Rune stones are small stones, normally with runes (esoteric alphabetic symbols), painted or etched on them. Most commonly known today are the Norse runes, called futhark (from the first six letters of the alphabet). The symbols are also often used on amulets for warding and protection.
I Ching. I Ching is an ancient Chinese alphabet commonly used for divinatory purpose, usually in the form of symbols etched onto coins, which are then tossed and the resulting hexagrams interpreted accordingly.
Throughout history, mankind has been fascinated with the future, and for just as long has looked to the supernatural and the divine for insight. I have only named three popular modern examples of items used to foretell the future, but people have used many others over the years, including the reading of animal entrails, tea leaves, the rolling of bones, oracles, scrying (using a mirror or crystal ball), palm reading, Ouija, pendulums, etc.