Are there other common items with similar hidden safety features?
Absolutely! Toy parts, water bottle caps, and even some food container lids include similar ventilation designs to prevent choking hazards.
In Conclusion
Sometimes the smartest inventions are the simplest. A small hole in a pen cap may seem insignificant, but it reflects a careful balance of safety, functionality, and thoughtful design that improves everyday life without most of us even noticing.
ADVERTISEMENT
