Daily Documentation

I am always looking for new ways to keep my daily notes with students.  Right now I have a manilla folder for each student that I keep in a small file container.  On the left hand side of the inside of the folder I keep the student's most current IEP goals and objectives.  On the right hand side I keep a data sheet and any informal assessments I have done.  My data sheet is pretty simple.  I have boxes with the date and time on it.  I have an 'I' for individual and a 'G' for group which I circle depending on how I see the student.  This helps me when I bill for Medicaid. 

I keep data with +/- marks and write down a simple description of the target activity.

How do you keep track of your daily data?