personalized wine box

I'm getting married this summer and we are looking for some interesting old symbolic traditions to perform at the end of the wedding. My cousin found a cool one that was a box with wine glasses and letters that they kept until their first anniversary. We really liked that but don't want to just steal it, and we aren't doing a religious ceremony so the only religious stuff we'd like would be ancient-ish or old enough that it won't be taken for more than the symbolism it represents. All that being said, if I don't know you I have much less of a problem stealing your idea. Well, let's say personalizing your creative model...haha

Thanks for any help!