Mark approximately 3cm all around the narrow sides of your cereal box then cut it down and staple or glue the corner flaps.so you have a shallow tray (get an adult to help if needed).

Take a sheet of green card (to fit the bottom of the tray) and mark up your football pitch with the white gel pen or pencil. I used a lid to draw the circle/semicircles.

Goal mouths need to be about 11cm wide and the semicircles approximately 9cm in diameter.

Next cut two pieces of white card measuring 30cm x 2cm. These will make the goal posts (one for each end). Fold them in half length ways so you have two narrow strips.

Cut two pieces of netting measuring about 20cm x 16cm. Glue along the inside fold of your strip and sandwich the long side of your netting in the fold.

Once the glue has dried you can fold the strips of card to form your goal posts like in the picture here. You need to fold them so that the sides are 5.5cm high and the feet are 4cm long - this should make the top bar of your post about 11cm (just the right size for the goal mouth).

Pop the green card with your pitch into the cardboard tray.

Now cut a 11cm section in the centre of each end of your cereal box (this is where the goals will go) and fold them down so they're level with your pitch.

Cut a piece of blue and a piece of red card each measuring 11cm x 16 and fold them in half - these will make the floor of goal mouths.

Staple or glue the feet of your goal posts under the cardboard flaps at each end of your cereal box (the open end of the goal should be facing your pitch, so the net drops down behind the goal post).

Glue inside the folded blue and red card and stick together over the cardboard flaps to form the goals at each end of the tray. Then drape the netting over the coloured flaps and tuck it underneath at each end.

Finally use the black felt tip pen to draw markings on the ball to make it look like a real football!

All you need now is a couple of drinking straws and a few friends to challenge to a game. Just blow gently into the straw to try and score a goal. Don't blow too hard of the ball will fly up into the air and out of play.

Remember to place the ball in the centre of the circle after a goal is scored ready for kick-off.

Have fun!