This is a great activity when there are 10 minutes left in class or the day before a quiz. My students make flashcards for each unit, so they always have them ready to play a game.
Each students picks 5 of their flashcards to put in front of them on their desk. You can choose to have them put them TL side up or English side up. The teacher calls out words. When they have the word they put it off to the side. When the teacher has said all 5 of their words they say Bingo and read them back. After a couple of rounds tell students to switch out their cards for new cards.