I'm not sure where I stated it...but NFR normally means Not For Resale. As in, a retail sample distributed free of charge - for evaluation or for someone's access who can benefit the seller or widen the distribution of a product.
Here's a link to Dave the Dead's head popper how-to that we've used to create Ivana Getchu (the skellie behind the tombstone in our yard haunt you asked about) and a few other tombstone peepers: