Done!

A few hours ago I sent the last files, and an invoice to my editor at Facts on File. I am officially done with the two books I have been writing! These books are aimed to provide supplemental instruction to high school physics students, one on Light and Sound and the other on Electricity and Magnetism. They are on the way to being published sometime by the end of the year (I think). I will soon be a published author! 

Now what to do with my "spare" time?