Get a permanent marker in gold or silver and write your name on the tubing. Also, I just got one of those supercharms on eBay engraved with my name and initials and used the charms to make a little ID tag. It looks classy. And a big also ---> never lend it. If a doctor or nurse or whomever needs a stethoscope at work, then they should be bringing their own with them. I just tell people, nicely, "no" and if they protest then I tell them that they don't want my ear infection. That always does the trick.