Carrying a multi-tool can be a disaster, especially when you are passing through the checkpoints and the alarm gives off a loud beep. What you need is something that can be easily carried, doesn't break your nail when trying to take out a tool and is inconspicuous.

The Swiss Card Quattro by Victorinox is an amazing accessory that carries all the necessary tools and then some. Shaped like a card, it carries 13 inter-multi tools that have more than one purpose. This is what gives it the light weight and allows you to carry the tool in your pocket wherever you go.