I number all my desks from one to whatever. Then, I place numbers in a hat that corresponds to the number of desks in the classroom. As students walk into the room, they pick a random number. This is where they will sit for the day. This system saves me time because I do not have to make up a seating chart. It also gives the students opportunities to work with different classmates. There is a lot less complaining as the students soon realize that where they sit is just the luck of the draw.