I always find myself mesmerized by the air traffic exhibit at the air and space museum. Â It has planes, color coded by airline, flying across a radar map.
They use various days as samples–including September 11, 2001. Â (It is really eerie to watch air traffic suddenly stop).
There’s an app out now that creates visualizations of the day’s air traffic. Â You can also edit how you want to see the visualization, changing it according to your preferences.
Here’s my glitter-based visualization of air traffic right now. Â (Note, glitter in flight not recommended!)