Abby Weinstein at Get Flipped sent me information about her company. They provide interactive holographic entertainment at your event. Your guest will receive a hologram photo card instantly, while standing in front of a green-screen. Guests strike a pose in front of a virtual background and in minutes they receive a 4 X 3" photo card, complete with a message or logo flashing along the custom borders. They will attach a magnet, lanyard or bag tag for continuous enjoyment.
They can provide the Live green-screen entertainment for your guests or they can make flips in advance for Save-the-date cards, etc.