Though we live in an increasingly digital world, there are still plenty of moments in which we need an everyday carry pen, though most people seem to forget that. A physical writing tool can quickly become your best friend. There are checks to be signed, numbers to be exchanged, notes to be left, and ideas to be sketched. And one of these days, your smartphone is going to run out of juice right when you need it most - as it always does. Carry a pen. It will come in handy.