Activity for Rachel

I have heard that people like wedding favors to have as momentos for the wedding. The thing is that we are on a super tight budget and have to make cuts where we can. I'm wondering are wedding favors absolutely necessary? I can't predict the future...

I know this sounds ridiculous but I need advice... So I was engaged a long time ago to some jerk (long story short he cheated and we broke it off) but during that engagement I asked one of my friends who was close to me at that time to be my BM. Now...