First, Scott poked holes in the bottom for drainage:
Then, I filled it about 1/4 - 1/3 of the way with wine corks to fill up space (without a lot of weight) and help with drainage:
Last, I filled it with dirt and flowers. What do you think?
For another (not gardening-related) way to reuse wine corks, see this old Easy Being Green post.
Happy New Year!!!