Keeping organized is always a struggle for the students. One small thing I have done to try and combat this is to have a chart handy for them to reference when cleaning their desks. You wouldn't think that it would make a huge difference, but it really has! The students have access to this chart both hanging on the wall AND in their procedure manual. Each day, when we go to clean up the room, the check their desks to make sure they are clean and tidy...and match the chart.
In the 14 years I have been hanging a desk chart on my wall, I have to say that there are only a handful of students who EVER have a messy desk.
(Extra points, anyone care to guess where I made my chart??? :) )
Head on over to Fabulous 4th Grade Froggies to read about more organizational tips.