Looking for a third party digital compass

I have zero sense of direction and my 2007 Prius has no built-in nav or compass. I'd love something that is JUST a compass (no bells and whistles) for my car. Can clip onto the visor, mount on the mirror, or dash. I read that sometimes there is interference. It looks like most of the options on Amazon have speed, temperature, humidity, and lots of other things I don't want or need.

Recommendations appreciated!