Assemble all the ingredients for your trick: plastic cups, food colouring, ice and a clear fizzy drink.
Put a couple drops of food colouring in each cup (use a different colour in each one). Cover with ice. Ask your friends to pick a cup, fill it with the drink and watch it magically change colour!
(We showed this in a transparent glass, but for the trick to really work use an opaque cup.)
Kids will be amazed by this fun and easy magic trick!Photo: Carlyle Routh