Here's a great example of taking a black magnetic micro and making it blend in perfectly to the surroundings. Not just another-magnetic-cache-on-the-back-of-a-sign. Are you kidding me?
There's more to this rusty screw than meets the eye! Very tricky hide. Just remember you'd need to use an existing hole for this hide; you can't drill holes in something you don't own to hide a geocache.