outdoor firepits, and a majority of them have the capability of being gas powered.
nerds (gas firepits like above a not generally D-I-Y projects, especially if you're working with propane)
Try the Hearth, Patio & BBQ Association's website and do a dealer search: http://www.hpba.org/retailer-locator
Or you can go to the National Fireplace Institute website and find a certified gas specialist:
Like the firepit on stones...practical and beautiful. Nice firepit here as well
firepit on a contrasting stone to set it off is cool idea.