I was recently traveling this weekend and happened to pass through the LaGuardia airport. The terminal I was in had a really pretty floor to ceiling fountain that was used as projection screen creating the illusion of a 3D hologram.
While I'm not a digital artist, I think including "holograms" like this would be a great way to meld futuristic technology into a green focused cityscape.
Where I'm located a whole, raw chicken is $17 :(