Sometimes when you're out being awesome you need a knife, but you don't always wanna carry one around. Luckily United Cutlery makes a Black Legion series that has one small enough to fit in your day bag but still useful enough to get the job done. The blade is 1 1/2" and the whole knife is 2 1/4" when closed, and with a stainless steel clip, you can also conceal it easily on your belt or in your boot. 

Get one HERE