These are some good luck charms and amulets, which people from different parts of the world have found to be effective sources of positive spiritual energy:

HORSE SHOE
Perhaps the most well known and universally recognized symbol of good fortune. Placing an upright, used horse shoe at the top right corner of your front door-frame is considered to be an invitation to good luck to enter your home. Similarly, placing a used horse shoe in a north facing, upright position inside a building brings good fortune and increases the ambient positive spiritual energy in the building. According to Vedic Astrology, a horse shoe worn by a black horse protects against the malefic effects of Saturn or 'Shani Dev'.

RUDRAKSH
The nut of the Rudraksh tree that can be found in parts of the Himalayas, Indonesia and Malaysia. There are 38 different types. Rudraksh beads represent Lord Shiva, part of the divine Hindu trinity. This very powerful and auspicious charm bestows spiritual powers, good health, fame and material happiness. Rudraksh beads are used for making 108 bead rosaries for chanting Mantras, so as to increase the effect and power of the Mantra. Although these rosaries are a product of the ancient Vedic period, through modern science, we now know that the figure '108' is of particular relevance, as the distance between the Earth and the Sun is approximately 108 times the Sun's diameter. The Sun's diameter is about 108 times that of the Earth's. The distance between the Earth and the Moon is approximately 108 times the Moon's diameter. It is perhaps possible that the ancient sages determined that there 108 steps between our ordinary human awareness and our inner divinity. As to how they determined the distances between these celestial bodies, with such accuracy, remains a mystery.

SCARAB BEETLE
This ancient Egyptian amulet is worn as jewellery and symbolises the renewal of life.

SWASTIK 
The sign that represents the Hindu Lord of good fortune, 'Ganesh'. 'Swastik' is a Sanskrit word that means, 'Purveyor of Good Fortune', it bestows luck and prosperity, but it must always be placed in a clock-wise direction. This symbol of luck should not be confused with the 'Nazi Swastika', which is placed at an angle and does not produce any positive energy.

CRYSTAL CHARMS
Certain materials, such as natural crystal are thought to increase positive spiritual energy, hence a lucky charm or symbol made out of such a material will have greater powers.

LOVE TALISMANS
The Vashikaran talisman, shown here increases one's powers of influence (attraction) and is a powerful love talisman, but this is not limited attracting of members of the opposite gender and is used to improve other types of relationships by giving the wearer greater powers of influence.

LUCK CHARM BRACELETS
Luck charm bracelets are very similar to lucky charm lockets. Very much in vogue nowadays, they are fashion accessories that serve a useful purpose.

OM
In Hindu mythology, Om or AUM is believed to be the first sound to pervade through the Universe at the beginning of time. Almost all Mantras are also initiated by reciting the word 'Om'. Worshippers of this sacred symbol are blessed with luck, material comforts and spiritual powers.

ZODIAC & NUMEROLOGICAL CHARMS
Certain numbers such as your date of birth and compound talent number have a particular significance in your life. Maintaining numerological harmony is very important for improving your luck, hence  commencing important tasks, new beginnings on numerologically compatible dates and avoiding adverse ones, is essential for successful results in all spheres of life. Similarly, acquiring a charm for a favourable number or one which represents your zodiac sign can be very rewarding.

ACORN
The nut of the Oak tree, it is also known as oak apple. Carrying a dried Acorn is believed to give the gift of youth to the wearer. It can also be used for wealth and attraction of the opposite sex.

ASTROLOGICAL TALISMANS
These types of talismans are usually very effective as they are prescribed according to the specifics of one's horoscope. That is, a talisman corresponding to a favorably or unfavorably placed planet in the horoscope of the concerned person can be acquired to either strengthen or reduce that planet's effects.

KEYS
Three keys worn together symbolize the unlocking of the doors to health, wealth and love.

FEATHERS
The feather is an ancient charm for good luck and represents the journey of the soul to the other realm.

SPELLS
Once you've acquired your lucky charm, charge it with magical energy, using this 'Spell'. Take the object on any day during the period between the New Moon and Full Moon and hold it in your writing hand and recite, 'Gods and Goddesses, come to me? Feel the energy build up in you and flow into the object. Visualize it make your wishes come true. Seal it with the words:
Health I bring you.
Happiness too,
Wealth herein,
And all for you

Source: http://www.powerfortunes.com/luckycharms.html