Most people play bingo with each player having a card containing a set of pictures, numbers, etc., and each card being different from the rest. However, that usually involves some preparation beforehand and quite a bit of printing.
However, if you haven't got anything prepared and you have some time at hand (or your students are clamouring for some games), you can still play it. First, let me explain the instructions for this quick system.
I've created a page containing 24 photos of things related to the animal kingdom (not sure why I've included mushrooms, though! LoL). You can, of course, use just about any topics from any core subject for bingo.
The game should be played in groups of 3 or 4 people.
There are 24 pictures, and they should be cut individually. Decide how many pictures you need - all 24 may be too much. Let's assume that we've decided to use sets of 15 pictures.
Place the 15 pictures in a bag or an envelope. They could all have the same set of pictures or not. Number the envelopes. The caller has the envelope with a complete set.
Hand one envelope to each group, and tell them to select 4 pictures (or more, depending on how long you want the game to last), and leave the rest in the envelope. The idea is that they will select those pictures they know the word for.
When they are ready, the caller removes a picture from his envelope and calls out the name of the animal. When they have the picture of the animal which has been called out, they turned it over. When they have all their pictures turned over, they shout "Bingo!".
When the game is over, each group puts their pictures back in their envelopes so you'll have a complete set for the next time you play!
So, what can you do if you haven't got anything prepared? Simple. Get the students to write/draw their selection in their notebooks. Say you want to revise numbers - you write a selection of numbers on the board, e.g., 13, 30, 14, 40, 15, 50, etc. or just dictate your instructions (such as "Choose any six numbers from 1 to 99!"). Ask them to select 4 or 6 or however many you decide, and play away! Rub the numbers off the board before you start and note down the numbers you call somewhere so you can make sure that the winners have actually got the right ones.
If you are in Maths class, you can do geometric figures or algebra; if you are in art class, you can ask them to draw the things you write on the board, and so on.