Today is Carl Sagan Day — I think that means you are officially expected to be filled with awe of the cosmos all day long, while also being thoroughly skeptical of the supernatural. Hang on…I think that means I celebrate Carl Sagan Day every day.
If I want to do something different, maybe I should make an apple pie from scratch.
Another thing you can do is consider the importance of science on social policy. It could be a very busy day!