Recording? Rehearsing? Fiddling about? If you get stuck, the ONE TWO RANDOMISER can inject some life into your flagging project. Just make these simple-to-assemble RANDOMISing modules, one of which gives the first half of a written instruction, the other the second half. Together they'll put you on a different track.

MAKING

CUT OUT the two big squares along the bold black outline. To make each RANDOMISER, first turn the square over so that the back of the page is facing you.

Now FOLD each corner in turn into the dead centre of the square, pressing down hard on to each fold, bringing nine black and white numbers to face you on a smaller square.

Now TURN this square over again, so that eight white instructions face you. Fold each corner to the centre again, pressing down on the folds once more, giving eight black numbers on a yet smaller square. Position the square in front of you with 6 and 12 at the very top.

FOLD the bottom half – with 9, 10, 8 and 11 on it – up to the top, pressing down on the horizontal fold. Open out again. Then fold the left-hand half – with 6, 5, 9 and 10 – over to the right, pressing down on the vertical fold. Open out again to the eight black numbers.

Pick up the square and PUSH the four corners up and together to form a peak. Then ease the thumb and forefinger from both your hands into each of the four "pockets" formed by the white-numbered flaps.

With your fingers and thumbs in place, push them together at the tips to form a pyramid-shaped contraption. You now hold a completed RANDOMISER. Make the second one in exactly the same way, and stand by.

USING

So now you have two RANDOMISERs.

The maroon one with black numbers 5 to 12 is for the first half of your random-generated instruction; the amber one with black numbers 13 to 20 is for the second half of the instruction.

Hold the first-half RANDOMISER, with thumb and forefinger of each hand in the white-numbered "pocket" flaps. You can display four internal black numbers at a time by switching between thumbs-and-fingers touching, or thumb touching thumb and finger touching finger.

Choose one of the white numbers, 1 to 4. If it's say, 3, then flick through three finger-and-thumb options in sequence: one (open, close), two (open, close), three (open).

Now choose one of the four black numbers displayed at random, and open the flap to reveal the first half of the instruction, printed in white letters underneath.

Repeat the operation with the second-half RANDOMISER.

Put the two halves together, and yoD have successfully RANDOMISEd.

You might even make up your own instructions: the best list of eight beginnings and eight endings sent into us by 1st October 1984 gets a big record token. Get RANDOMISing!