I second the idea about giving students a planner (or assignment book). We have been using this in the elementary school where I am principal for about 5 years now, and it's one of the best things we ever did. I think having students at that age keep context lists for errands, etc. is too advanced for this point. What works is decide what needs to be done, pick a day when you are going to do it, and write it down for that day.
As far as an in-basket, we don't use that terminology, but what we do tell the students is to "pick a spot at home where everything for Mom or Dad's attention is going to go."
For your presentation, you can use writing things in the planner (to take care of what GtD would call the "mind sweep') and having a spot for everything for Mom or Dad to take care of the paper traffic.
I think that leaves two things to cover. The first is making decisions about paper. I use the acronym "ANT." Every piece of paper is either ACTION (which I include handing off to Mom or Dad as being an action), it goes in their NOTEBOOK (in other words, it's reference material, such as completed assignments, study guides, or whatever they might need to produce on demand), or it's TRASH. All of this gets their desk (or locker) in some sense of order.
The final thing I thing would be good in your talk is setting goals. All of the stuff before is about getting things in order. If your school uses Accelerated Reader, having them set a goal fir how many Accelerated Reader points they want to earn by the end of the year would be a good one. Have them turn in the planner to the last week of school and wrote that number down. Have them divide that number out over the year and jot down at the end of each month (or even week) where they would need to be in order to reach their goal.
Having been in education for 23 years, I can tell you that organization is HUGE part of being successful as a student. Plenty of kids who are not terribly academically talented still do extremely well if they are doing the kinds of things I have addressed here.
Frank