I collected a few Apple pens from a few presentations (FCP, OS X, etc.) in my town. They have an iMac-like translucent body (that is, like the original iMacs) and come in different colours. Frankly they look better than they work and I had a few of them fall apart in my hand. Having said that, I never miss an opportunity to collect a few more, especially since they are given out for free.
Here is a sample of my collection. Admittedly, the rest of my collection is missing (looted like so much of our history from a Baghdad museum) and this is the only remaining sample.
Here it is!