How would you design an eye-catching and creative invitation?

I thought it would be cool to present you with a real-world project I’m dealing with right now. I need you help! Let’s have a creative session in the comments.

I need ideas for a creative invitation for an upscale meeting/conference in Palm Beach, Florida. The ideas I need have more to do with presentation than actual artistic style, so I don’t need ideas like ‘do a watercolor painting’ or ‘have palm trees on the front.’ What I do need are interesting components.