Divide the inside of a file folder into boxes that are slightly larger than small sticky notes. Write students' names in the boxes in alphabetical order, one name per box. Whenever you want to make a note about a student's progress, jot the information on a sticky note and then place it in the appropriate box. Periodically move the sticky notes to students' assessment folders. You'll have valuable information at your fingertips when it's time to prepare report cards.
Put a different colored dot on each desk in a group. When you need to have one student from each table do something, you can just simply say "Green dots, come get the papers for your table." or "Orange dots, take your table's trash to the trashcan."