A gearhead jeweler is selling handmade rings shaped like car engines on eBay. From the item description:
My name is David Kauffung. I've loved anything to do with cars and engines my entire life. 15 years ago, I start dabbling in jewelry. Now I bring high performance engines to life in gold, silver, and brass hand crafted rings. I've also experimented with a copper / brass combination to give the effect of rose gold… I've hand crafted rings for Dale Earnhardt, Richard Childress, and Barry Grant. I've advertised these rings in Super Chevy Magazine, Chevy High Performance, and on the hit TV show Horsepower TV. Because of the complexity of the design (casting), these rings are precision made one at a time.
Link (Thanks, Michael-Anne Rauback!)
Update: Charles "Modern Mechanix" Shopsin says that the engine rings would be well-complemented by this functioning (!) gas engine tie clip featured in the May, 1962 issue of Mechanix Illustrated. Link
