I love this pen. How many times to you have to be in a position when you want to take down a number and a pen is not to be found? This thing is the size of your pinky finger. It writes upside down on any surface. I usually travel with a couple of them so that I can, again, give it as a gift if someone reacts to it.

These pens are a great idea as a gift for the person who has everything. Designed for the astronauts but works just great here on earth. I wont be without mine now it seems to go on forever. The clip is a great idea and you can buy them separately which is a must for attaching to notebooks and diarys. A great gadget gift at a really affordable price. (via Fisher bullet space pen)

You know, for kids! Yes, this is the coolest pen ever. While it's super neat for kids, it is super useful for adults. I do write in ways that makes ink stop flowing in most pens. Not the space pen. If you have an odd writing habit, the space pen is for you. (via cogg)

This pen is the perfect complement to the small Moleskine notebook. It can click on the elastic strap from the notebook, is the same width as the notebook, and won't fall of if you have the notebook in your back pocket.

In addition, this pen will never leak and the lid covers the pen extremely securely so you won't accidentally write on yourself either. Because it is pressurized (it was invented by Fisher for NASA), it will always write -- even upside down.

Okay, I tried the upside down thing and while interesting, I don't really have any use for using it that way.