Etsy seller BandScapes offers this lovely, makerish wedding-ring featuring a sterling silver adjustable wrench, clutching a sapphire:
The jaws are pinching a .06ct medium-blue natural sapphire. Overall, the profile is low to be comfortable, not too wide and not heavy, but sturdy. A ring that can be worn continuously as any wedding band would be.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.