This post will be short and sweet since this project was quick and easy. What you need is that pile of white and red wine corks you've been storing in that junk drawer of yours. Take those and find a wooden box. You can probably get a really inexpensive one at Michael's or Ben Franklin. We had one lying around that was the perfect size (my mom gave Matt a Saki set that came in this box).
I was originally going to do this as a monogrammed "O" but that doesn't look quite appealing in "Cork Font".
If you drink more red wine than white wine, then do your letter or number in white wine corks. If you drink more white wine than red, then do what I did and use red wine corks for your number/letter. You don't have to glue them in or make this permanent so you can adjust this as often as you want. Every year I'm going to change it to match the years we've been married. We just celebrated our 2 year anniversay this past Monday, May 30th.
Simple and free! And TRIPLE BONUS: You get all that space back from your drawer. As Sherry from YHL would say "Amazeballs"!