Weddingbee boards

I need ideas please!  My fiance thinks that because we are having an education themed wedding (we are both teachers), that instead of the usual unity candle or sand ritual, we could do something with a venn diagram.  The problem is, we aren't sure how to include this in our ceremony.  We were first thinking of using a chalk board or a dry erase board to show how we are two individuals joining together.  But we don't want to take the time to actually fill it out during the ceremony. Here is a link to check out for more info.

Ideas please!