This is the final 1 Minute Finger Tip of the second series. Can you beat Stephen's studio time of 58 seconds? Remember you can time yourself with our pop-up timer. To complete this one, you'll need an empty CD case, some sticky tape, a small square piece of card and some scissors. Start the clock and begin by folding the square piece of card in half... ...and in half again, like this. Take the scissors and cut this shape into the card. Now grab the sticky tape and stick loads of pieces of tape on the CD case. Unfold the card and place it into the CD tray. Stop the clock! You've made a stain glass window. To see the effect, pop on a pair of polarising sunglasses, and look through the stain glass window into another pair of polarising sunglasses. The effect is great! If you've got more time, and a lot more sticky tape, you could make something that looks like this. Pretty cool, eh?