I like these 'bubbles of light'...great concept for a design & technology conference / city marketing. Something like this would work very well when you want to draw attention to certain parts of your city, like the Arena in Amsterdam.
These examples were used in Australia. "The Sonic Light Bubble, an inflatable installation created by Melbourne-based, award-winning art and design practice
ENESS. Containing over 200 LED lights and towering at 4.5 metres high, the bubble responds to human touch with mesmerising visuals and sounds." See more
here.
