In an emergency, using the simple tools around you to make an effective self-defense device can help you protect yourself. However, when using self-defense devices, it is important to stay calm and only use them when necessary. The following are some simple and easy-to-make self-defense devices, but please remember that these methods are only for emergency use and should be used in accordance with local laws and regulations. ### 1. **key** -**How to use**: Clamp the key between your fingers with the tip facing out to form a ”cat's claw" shape. In case of emergency, a stab can be performed with the tip of the key. -**Precautions**: Choose a strong and sharp key, and try to aim at the fragile parts of the attacker, such as the eyes, throat or abdomen, when using it. ### 2. **Pen orpencil** -**How to use**: Hold a pen or pencil with the tip facing out, and stab the vulnerable part of the attacker vigorously. -**Precautions**: Choose a metal or sturdy pen, keep it stable when using, and avoid slipping off. ### 3. **Pepper spray (homemade)** -**Production method**: Mix chili powder or chili sauce with water and put it in a small spray bottle. Spray directly into the attacker's eyes when used. -**Precautions**: The effect of homemade pepper spray may not be as good as professional products, and you need to be careful when using it to avoid accidentally injuring yourself. ### 4. **Belt or scarf** -**How to use**: Hold one end of the belt or scarf in your hand and throw the other end towards the attacker's face or neck to distract or restrict his movements. -**Precautions**: Use it quickly and decisively to avoid being caught by an attacker. ### 5. **Glass bottle or jar** -**How to use**: Hold the neck of the bottle and hit the attacker's head or other fragile parts hard. -**Precautions**: Choose a sturdy bottle, and make sure to hold it tightly when using it to avoid slipping off. ### 6. **umbrella** -**How to use**: Turn the tip of the umbrella outwards and stab the attacker in the abdomen or face with force. -**Precautions**: Choose a sturdy umbrella, keep it stable when used, and avoid slipping off. ### 7. **Coins or small objects** -**How to use**: Hold a coin or small object in your hand and throw it hard at the attacker's face to distract him. -**Precautions**: Use it quickly and decisively to avoid being caught by an attacker. ### 8. **Mobile phone** -**How to use**: Hold the phone in your hand and hit the attacker's head or other fragile parts hard. -**Precautions**: Choose a sturdy mobile phone, and make sure to hold it tightly when using it to avoid slipping off. ### 9. **Heel** -**How to use**: Take off your shoes, hold the heel, and hit the attacker's head or other fragile parts hard. -**Precautions**: Choose sturdy shoes and make sure to hold them tightly when using to avoid slipping off. ### 10. **Books or magazines** -**How to use**: Roll the book or magazine tightly and hit the attacker's head or other fragile parts hard. -**Precautions**: Choose a heavy book, and make sure to hold it tightly when using it to avoid slipping off. ### Important note： -**Stay calm**: In an emergency, it is essential to stay calm. A calm mind can help you make more informed decisions. -**Avoid conflict**: The best way to defend yourself is to avoid conflict. If possible, try to escape from the dangerous area and ask for help. -**Compliance with laws**: When using any self-defense device, be sure to comply with local laws and regulations. Certain self-defense tools may be illegal in some areas. -**Practice use**: Practice the use of these self-defense devices in a safe environment so that they can be used quickly and effectively in an emergency. Hope these suggestions can help you protect yourself in an emergency. Remember, safety always comes first.