What type of plants would be good to place in a sunny dry sandy patch of land at the bottom of my driveway? I live in NC, zone 7b. I want something I can pick up fairly easily. My husband found some ideas in a gardening book (like sea lavender), but we can't find any of that without special ordering it. So, what would be cheap and easy to find and not block the view at the end of the driveway, and work for that type of environment?