If the day had 28 hours, I'd spend the bonus four planning lessons.
I just now broke into a spontaneous grin, the first one of those I've had in days, spontaneous or otherwise, while planning an Algebra lesson on fractals. I use Apple's Keynote software. It took six hours of my weekend to design Tuesday's lecture, but a kid gasped in third period (seriously) when I lit up the path of the cue ball and I knew I'd do it all again.
Algebra is going as well right now, but other priorities are tugging me away. Like unpacking so I don't have to sleep in a bag for the third night in a row.