Creative keepsakes for Beach Weddings/natural weddings

I stumbled across this great and affordable idea to have a keepsake for you and your spouse at a wedding reception and ideal for a beach wedding or one that is nature oriented. Take regular stones, gather them, and put them in buckets, a vase, or simply display them on a table at your reception. Instead of a guest book, guests can sign them and once finished, you can put them around your house in your yard, pots, or in a garden for memories. I think it's a great momento of the day and will remind you of your wedding day.