I draw a graphic of the tables in my classroom, with my desk identified to give orientation to the user. I copy and laminate several copies. I write in the names of the students on the laminated sheets with an overhead pen and leave them on a clipboard for the substitute. I also add helpful notes, such as speaks no English and also make sure that kids with same names are identified with first and last names. I also include phonetic spellings of hard to pronounce names. The substitute then has a ready reference for the classes that day. This clipboard also helps when I do a new seating chart. Kids who have been absent know just to check the chart to see where they sit.