Thought de Jour

If they made pen ink caffeinated...

Then writing important notes on your hand would invigorate you and make you more likely to remember the note.

For those trying to quit smoking, perhaps nicotine ink; although that might have dire results as crazed sufferers try to cover their entire surface area in pen...

So many possibilities to make the pen more than it is. And as we all know, it is already mightier than the sword.