Fireflies

Arts and crafts time! Make a firefly jar using phosphorescent paint. 

https://frompankawithlove.wordpress.com/2012/01/08/glowing-jar-project-varazslat-a-lakasban-enhu/

Also, great photographs of real fireflies.

http://www.wired.com/rawfile/2012/02/japanese-firefly-photos-and-the-anatomy-of-a-viral-spread/?pid=1839&viewall=true