In a situation where you need to defend yourself, it’s a good strategy to use common objects that are at hand. However, make sure you use these objects legally and safely. Here are some suggestions on how to transform common objects into weapons for self-defense: 1. **Keys**: Hold a key in your fist with the tip exposed and use it to stab an attacker. 2. **Ballpoint pen or pencil**: As a makeshift weapon, you can use it to poke or stab the opponent's sensitive parts. 3. **Book or magazine**: Roll it up and use it as a makeshift stick to hit or block attacks. 4. **Belt**: You can use it as a swinging tool, or use a metal buckle to increase the deterrent effect. 5. **Pen**: Similar to a ballpoint pen, a fountain pen is usually sturdy and can be used for defense. 6. **Cellphone**: Hold your phone tightly and use it as a protective gear or directly hit the attacker. 7. **Umbrella**: A sturdy umbrella can be used to block or stab. 8. **Bag**: You can use it to swing, or put heavy objects in your bag to increase the impact. 9. **Flashlight**: Sturdy and heavy, it is very effective when waved, and can also be used to illuminate or flash to confuse the opponent. 10. **Hot drinks**: Throwing hot liquids at attackers can buy you time. When using any object as a self-defense tool, the most important thing is to stay calm and alert, try to avoid direct confrontation, and flee the scene when it is safe. Remember safety first, and protect yourself within the scope of the law.