There are three keywords that wrap this wedding up in a nutshell: BUDGET, DIY and BEAUTIFUL. That's all you need to know. It's possible to create something fun and spirited on a budget and that someth.
Alabama Farm Wedding from Anna Pociask Photography
Make your guest book a big deal. Give guests cards to fill out and drop in a suitcase as they exit the reception. You could also make tags that guests can sign and hang from a tree, or set up a booth with props to make a video guest book.