- A plastic bottle of 2L
- A fine plastic bag (for fruits for example)
- A big nail (100 mm x 4 mm)
- A BIC pencil spring
- A cork
- Paperclips or pieces of metal (drilling drops for example)
- Masking tape (for painting)
- 750 mL of alcohol vinegar
- 750 mL of water
- 105 g of baking soda
- One tablespoon of dishwashing liquid
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