The Capt. Jules’ Extraordinary Telescope Ring from ThinkGeek is the perfect accessory to compete your Steampunk outfit. The ring is made of cast aluminum, and it comes with attachments that will adjust the ring to fit size 5, size 8, or size 11 fingers. You can use it as a telescope by folding up the two lenses and sliding them apart, or you can simply fold out the larger lens 180 degrees for use as a magnifying glass. There’s even a small magnetic compass in the center of the ring. It’s $29.99 at ThinkGeek.