Next to my door is a bulletin board for absent students--there is a folder for each class and at the end of each class, I place what the student missed in that folder along with a short checklist detailing what they have missed.
The color of the folder on the absence board also corresponds to the colored folders for all other uses in my classes. I keep two 2-pocket folders per class--one for collecting work to be graded and one for owed tests and quizzes. These folders, along with a manila folder per class (labeled in the corresponding color) to hold that day's worksheets, all sit in a desk organizer on my front table.
6 slots = 1 slot per class + 1 last one for
owed tests/quizzes folders for all classes
In addition to this, I use my bottom desk drawer to organize my copies for upcoming classes--I try to keep copied about a week ahead of time for Geometry (this will be my 4th year teaching it, and I have taught 3 different courses of it) and when possible, a week ahead for my modified A2T course, but this doesn't always happen. I try to count out the copies I need for each section for my Geometry sections (I have 3 of them) and paperclip them together. That way, in the morning, I can just grab the copies I need for that day.
I am also a HUGE HUGE fan of lists... can't get enough of them!! So I use those list pads from Michael's dollar bins to create weekly (sometimes daily) to-do lists.
I don't use my plan book at all--I instead make monthly calendars (I like to see the big picture). I also have never found a calendar that actually uses the whole sheet of paper without borders, so I hand-draw mine with a ruler and marker.
While this method isn't perfect--I still am not sure what to do with things like seating charts or homeroom stuff--it has been working pretty well so far.