Maybe a pencil is better? (I was about to say pens but hey, no plastic, right?)
Or a coffee cup?
In any case, I do use them (that's how I "remember" who my AC or water heater guy is).
In another topic, in your website I noticed a couple of "weird" words. I suggest you link them to wikipedia so people can read more about them (like endometriosis and plasticizers)