Hand out a blank grid with enough squares for the number of people in your class. The grid should have the same number of squares across and down. Give the students a few minutes to circulate through the class and get everyone's name written on a square. Depending on the number of blank squares left over, you can have them write their own name on a square, or your name, or give them one 'free' square. When everyone is seated again, have each person give a short self-introduction. You can draw names randomly or go in seating order. With each introduction, that student's name square may be marked on everyone's grid, as in Bingo. Give a prize to the first 2-3 students to cross off a row.