Many modern Pagans and Wiccans include ancestor worship as part of their Samhain celebrations -- it's not out of the ordinary to meet members of the Pagan community who can recite their genealogy back ten or more generations. In addition, because it's common for Wiccans and Pagans to view death not as ending but as the beginning of the next phase of spiritual development, grave rubbings are popular with many Pagans. It's great to use those of your own relatives and family members, but if you find a headstone that strikes you as interesting, there's nothing wrong with making a rubbing from it.
It’s important to keep in mind that if you’re tromping about a cemetery, you should be respectful. Not only of the people who are lying there, but also of those living beings who may happen to come along while you’re there. There’s nothing wrong with enjoying yourself, but please make an effort not to disturb someone who may be grieving. Not everyone views death in the same way, so while your family may accept it as part of nature’s cycle, another family might be overcome by a sense of loss. Also, bear in mind that many cemeteries are private property. Before wandering into them, check to see if you need to get permission. If you do, be sure to get it before you end up trespassing.
Headstone rubbings are a unique way of preserving the past and getting some pretty neat décor out of it as well. While doing a rubbing usually doesn’t cause damage to headstones, there are certain precautions that should be taken. If a stone is worn or crumbling, pass on it. Rubbing an already-damaged stone can cause it to flake and chip to the point where it’s irreparable. Instead, choose stones which are in good condition – the best results come from either polished granite stones or solid slate markers.