The feeling of floating, all from sitting on a bench.
The balloon bench or "h220430", was created by Satoshi Itasaka and Takuto Usami. The bench is "visually inspired by the feeling of floating that the main character felt in the French movie, Le Ballon Rouge". It is suspended from the ceiling to give the illusion of being lifted by balloons. It is sold by Somewhere. They probably wanted to make a balloon house like on Up, but decided on something a bit smaller.