This is a new one for me, but may be familiar to you if you're into crafts.
But not just any pen.
It has to be one that will survive the heat of the oven. The pen most recommended for turning into a polymer clay pen seems to be the Bic Round Stic. Crafters have oven-tested it and confirmed that it will survive the high heat.
Also, it probably helps that the Bic and some of the others suggested for use – including a few models of Paper Mate – are cheap ballpoints. Covering your nice Zebra or Pentel would be sort of pointless, I think.
It also seems to matter which brand of clay you use, with at least one crafter strongly recommending Premo brand clay for pens.
The results of combing decorative clay and disposable ink pens are pretty amazing. Among some of my favorite polymer clay pens are the lightsaber pen, the chocolate cupcake pen, and the Despicable Me pen seen in this tutorial video.
If you'd like to give this a go, it seems to be a fairly simple process, with plenty of polymer clay pen tutorials like the one above to help you out.
Or, if you're lazy like me, you can just buy some already made. Etsy has a healthy selection of polymer clay pens for sale. I've found some awesome examples, like this steampunk pen that probably won't be there for long.
Any crafty readers who've made some of these pens? Don't be shy; send us some pics. We'd love to see your work.