This is the third part in our series on how to make jewellery out of your Christmas cracker prizes. If you have a spare necklace chain in your jewellery box, this is the easiest necklace in the world to make - you don't even have to leave the dinner table! You'll need: Necklace chain Remove the stopper from the back of the waterpistol and slide the middle of the chain into the hole. Carefully dangle the chain down into the spring behind the trigger. Jiggle until you get the chain looped around the spring. That's it! It really is that easy to make an instant toy necklace.