I've never heard of a casket pillow, either, so there are a lot of us out here. From reading the postings, I think a casket pillow would be something a child (or anyone, really) would place on or near the casket as a special remembrance from the individual(s)? So if there were more than one child, each would place their own pillow. I see how that could add up if there were several children and a retail florist was used. Your pillow is lovely and I'm sure it was appreciated. Sorry for their loss.