A favourite of mine is criss-cross. This only works if the students are in rows though. One column stands up and you ask questions. The first student to raise their hand can answer the question. If they get it right, they sit down. Continue until only one student is standing. The row that intersects with that student then stands up. Repeat until you are out of questions. If you aren't in rows, you can do with a box and ball. Put the questions in a box and have them pass the box and ball to music. When the music stops, the student with the box takes a question and asks it to the student with the ball. For higher level students you can let them make the questions themselves.