[noonespecial]

If you ever find yourself in a situation where static electricity is a problem as in this article, find a regular wooden pencil, break it in half, sharpen both ends and then blunt them a bit so they don't poke you. As you approach the metal object, touch the end of the pencil to it first. Make sure you are in good contact with the other end. The graphite "lead" is a conductor. You won't feel the shock.

[onemoreact]

Works with any conductor like a ring or tape a paperclip to your index finger. I often touch the metallic part of my keys then use the key's to touch your door.

[noonespecial]

The pencil seems to work better, perhaps because the graphite has some resistance. I usually feel it a bit when I use a key.

In this case, the people in the warehouse were unable to carry metal in because the delay at the metal detectors would mean they got no break time. The nub of pencil would be ideal.

[tomjen3]

Surely the graphite is a resister rather than a conductor? Otherwise how can it stop the spark.

[neilk]

It doesn't stop it. Consider: the energy of the spark is flowing through your whole body, but it's only painful at the point of contact, because it's concentrated in the smallest possible cross-section. So use something else at that point of contact.