Extemporaneous and the Black Box..

I hold much respect for the Extemper. You guys do an event most people either know nothing about or know enough to realize they would rather cry than get involved--I honestly rank Extemp as one of the more difficult events due to everything involved. I admire the skills you posses and salute your passion!

I do want to know though: that black box is the key to your success. What are some ways you guys organize them and what are key pieces of support you would always keep in the box?

Details please! Thank you!