Etched in Stone takes river rocks from the Snake River and sandblasts messages on them. We had a pet memorial done for our cat on a the small rock (they offer small, medium and large ) for $30. You can have anything you want engraved on a rock. My favorite is the Grandma and Grandpa's love garden, with all of the grandchildren's name on small rocks that go around the large rock. Do a search for etched in stone and take a look at their website for ideas.
PROS: Unique gifts
CONS: can get pricey
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