You will need:

• An empty bottle
• Dishwashing liquid
• Vinegar
• Bicorbonate of soda
• A teaspoon
• Containers to keep your ingredients in

Blade says: Give your ingredients cool names that a wizard or witch would use. Don't tell your audience what you are really using. For example, call the dishwashing liquid "slime", the vinegar "bug juice" and the bicarbonate of soda "crushed dragon's claws". Put them in small containers.

1. Half fill your bottle with bug juice (vinegar).
2. Add a drop or two of slime (dishwashing liquid).
3. Add a teaspoon of crushed dragon's claws (bicarbonate of soda).
4. Wave your magic wand over the bottle.
5. BIM SALA BIM - watch the bubbles grow!