We have all seen unity ceremonies at weddings. The bride and groom each take a candle and together light a single candle. A colored sand ceremony where two different colored sands are put into a single container. Another is two colored waters merged into a container to make a different color. There are ones done with flowers and on and on.
Here is a new one. A frit ceremony. The bride and groom choose 2 to 4 different colors of frit and combine them in a single container. The very original part of this ceremony is that later the bride and groom return to the glass studio with their wedding frit and create a wedding or anniversary masterpiece.
Info from “the underground”.