Back in the '80s, when everything was possible, some guy had the idea to launch about 1,5M balloons in the air. The result was spectacular but also ended in tragedy as two fishermen were unable to be found due to the cloud of balloons. The whole purpose was to raise money for charity and make a grandiose (albeit ephemeral and as it turned out, dangerous) art installation.
Check these pictures out, I absolutely love the colours. The balloons in the first picture look like a mushroom cloud from a nuclear bomb explosion. The source of the pictures is Huffington Post.
Think about the consequences of your actions, even a good idea can turn out bad! And have a great weekend