K so I follow this website for modern designs and have really only ever bought one thing, yet I'm always looking at it. I saw this, and even though it's a little pricy for a keychain the idea is awesome. Removes bulk and the jingling of keys which both drive me nuts. 

https://www.touchofmodern.com/sales/keyport/fully-loaded-keyport-slide-2-0-black?sale=1&utm_source=Sailthru&utm_medium=email&utm_term=Subscribers-production&utm_campaign=Daily%20Sales%202013-10-26&email=mlars129%40gmail.com&open=1