Here is a sampling of unity ceremonies and other traditions--a nice addition to any ceremony!

Sand Ceremony
The bride and groom both pour different colored sand into a unity vase to symbolize the joining of their individual lives.

Unity Candle
Each partner holds a lit taper candle and, together, they light one larger candle. The two flames becoming one symbolize their lives joining in marriage. The individual candles can remain lit to honor the unique person each brings to their shared life.
Salt Ceremony
Indian weddings often include a salt ceremony, where the bride passes a handful of salt to her groom without spilling any. He then passes it back to her and the exchange is repeated three times. She then performs the salt exchange with all the members of the groom's family, symbolizing her blending in with her new family.
Breaking Bread Ceremony
The bride and groom tear off pieces of bread, and then each eat a piece. Sometimes the bread is also shared with family and friends. It symbolizes their future as a family together.

Garland or Lei Ceremony
The bride and groom exchange garlands of flowers. This is a common part of Indian weddings, where the ceremony is called varmala or jaimala, and represents a proposal by the bride and acceptance by the groom. It also represents their new unity, blessed by nature. In Hawaiian weddings, the bride and groom typically exchange leis. The families may also exchange leis with the couple. Leis represent the love and respect you have for the person you are giving it to, and the unity of the new family.
Circling
In Eastern European ceremonies, the bride and groom circle the altar three times, which are their first steps together as husband and wife. In Hindu ceremonies, couples circle the fire seven times, sealing their bond. The unbroken circle represents the unbroken commitment to each other.

Broom Jumping
An African-American tradition that has its roots in slavery times when slaves couldn't marry. Typically the family places the broom on the ground, and the bride and groom jump over it together. The broom can then decorate a place of honor in their home.
Lasso Ceremony
Lasso or rope is placed around the bride and groom's shoulders, usually by the officiant. Sometimes rosary beads, or orange flowers are used instead of rope. It can also be placed around the couple's necks, or wrists.
Celtic Oathing Stone
The couple holds a stone or places their hands on it during their vows to “set them in stone.”
Truce Bell
A bell is rung on the wedding day, the happiest day of the couple's lives and then is placed in a central location in the home. If the couple starts to argue, one of them can ring the truce bell, reminding them both of that happiness and hopefully ending the disagreement quickly.
