I tell you the Design Museum is really worth going at the mo. Some really inspiring ideas there. Like this here. When I first saw the video of these floating metall balls i tought this was an computer animation...

...I thought, nice, great way of how the balls line up to create different shapes like this car! BUT then I realised...

...that this wasn't computer animated at all! They used REAL metal balls and hang them on countless threads who then were pulled by a clever mechanical system! Brilliant!!!