Many of us cannot get by a day smoothly without the help of our trusty PDA or smartphone, and both devices more often than not come equipped with a stylus to make navigation easy. Unfortunately, losing a stylus could happen to even the best of us, which is why the Inka pen steps in as the perfect replacement. Not only does

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Inka pen look and works like a regular pen, underneath its carbon fiber and stainless steel exterior lies a hidden PDA stylus which you can use in case of emergencies. The Inka pen fits perfectly into your pocket and is also small enough to be attached to your keys. This nifty piece of stationary can even be used underwater and in extreme temperatures without missing a beat. The Inka pen costs $25, while its refill is rather expensive at $4 a pop. Great for those who are constantly on the go and require a writing instrument that can perform under any condition.
Pros : Made from top-grade material, works virtually anywhere
Cons : Refills are expensive
Inka pen works everywhere Source
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