We could have a marriage advice, message in a bottle set up where guests can write on pieces of paper and put it in the bottle for us to open later. I have some large vases and we would just need sand, rope or twine, and some message paper.
This is a very simple aisle runner compared to most other runners but it will look very simple and appropriate for a nautical themed wedding décor. Description from decozilla.com. I searched for this on bing.com/images