Weddingbee boards

So, I'm trying to think of ways to include people in the wedding.  I have a good friend who i was debating asking to be a BM, but because of time/$ restrictions on her part, I don't want to make her feel pressured to commit to anything.

In taking with my MOH, she helped me realize that a nice thing to do would have them participate in a part of the wedding or reception.  I know the idea of readings are always nice, but I don't want anyone to feel uncomfortable reading in front of people.  (I have memories of doing that at a wedding when I was younger and feeling a bit panicky).

So, my new thought is to have a ceremony of some sort and have my friend, my fiance's sister, and our moms participate.  What I'm stuck on is what the ceremony itself will be.  I want to keep it small, because I want it really to feel like the people doing it are special...and not that a larger group wouldn't be, but it feels somewhat watered down if its a lot of people.

So, some ideas (or idea) have been candlelighting of some sort, or a Jewish tradition (I don't know if one exists).  Has anyone ever done anything like this, or been creative with incorporating people?  Any feedback would be super awesome!  thank you!