The idea of transforming ordinary objects into self-defense weapons may sound fun, but it is important to emphasize that self-defense should always be done within the law. In some areas, it may be illegal to transform objects into weapons, so be sure to understand local laws and regulations. Here are some suggestions, but please use them with caution: 1. **Keys**: - When using keys as self-defense tools, you can hold the keys in your hand to increase the impact of the blow. Make sure the sharp edges are facing outwards for increased defense. 2. **Umbrellas**: - Umbrellas can be used to block attacks or as a striking weapon. Choose a sturdy model that can be swung like a stick when used. 3. **Flashlights**: - Heavy flashlights can be used as striking objects. The protruding edges can cause damage, or they can be used to illuminate the surrounding environment to increase vigilance. 4. **Backpacks**: - Backpacks can be used to block or block attacks, and can be used to wrap other items for increased defense. 5. **Bottles**: - Glass bottles can be used as weapons in emergencies, but they need to be used with caution to avoid injuring yourself. Plastic bottles can be used as striking tools. 6. **Pen**: - Hard pens can be used as stabbing tools and can be held to increase force. In conclusion, when considering how to protect yourself, knowing and understanding your surroundings and how to effectively avoid danger is often more important than physical confrontation. In addition, considering taking a self-defense course to learn how to protect yourself in dangerous situations is a safer and more effective option.