A kubotan is a compact, handheld self-defense weapon, essentially a small, solid rod usually made of metal or high-impact plastic. It is designed as a force multiplier in close-quarters combat, allowing a user to increase the power of strikes or apply pain compliance techniques to an attacker's vulnerable areas.
Tactical pens are durable, multi-functional writing instruments primarily used for everyday writing that also feature a self-defense aspect and emergency tools like a glass breaker. They are designed to be inconspicuous and are generally legal to carry in most places.