As an Eclectic Spiritualist I practice a variety of pagan pantheon's with a heavier lean towards Norse Paganism. Starting with Norse Paganism there are many symbols. The runes for example are a symbol and each have their own meaning. I have Algiz tattooed on me for protection.
Thor's hammer Mjolnir is a huge symbol in this pantheon as Thor is considered the protecter of Midgard (Earth) and thus his hammer is considered a great symbol of protection as well as strength.
The 3 triangle symbol known as the Valknut has many meanings, death, rebirth, the journey to Valhalla, and it also has the meaning of the representation of the 9 realms of Norse Paganism.
There are many symbols spread across. I also follow Egyptian Paganism. The Ankh symbol has a representation of eternal life which is worn or held in the hands of some of Egypt's major deities such as Osiris, Isis, and Ra.