This is what they issue cadets in Grammar Nazi schools.

So, among all the souvenir crap on which they've stuck the Tallinn Culture Capital 2011 logo, there is a decent-sized wooden stick, about the same size as a small police baton - i.e. not as big as a baseball bat, but enough to do some appreciable non-lethal damage. The Estonian name for it is vägikaigas, and it's intended for a kind of push-pull exercise, an old-timey children's game.

The English name they settled on?

Nitpicker's cudgel.

Outstanding. And yes, I checked Google and Wikipedia, there is no obvious etymological relationship. Somebody in the Culture Capital project team honestly believes that a wooden stick, about two fingers' thick and a forearm long, is primarily the workaday tool of a nitpicker.