My grandfather gave me what appeared to be a muti-function knife when I was 8 years old. It had several different blades including a spoon and a fork. It also had hardwood handles. I brought that thing everywhere including school. In the late 70s, one could do such a thing without being accused of carrying a weapon. Since then, I always carried some form of keychain SAK / Vic. In more recent times, I think it was the Spyderco Military. Once I was bitten by the Spyder, there was no turning back, and has since become a full blown addiction.