In the “Know-tary” – Advertising tip
Always get your business cards out there to EVERYONE you can EVERYWHERE you can.
I have used vehicle business card holders for years.
I am not adding a link because I am not affiliated with any of these companies.
I am showing you a screenshot here of an Amazon Search. I can tell you in my experience the oval shaped holders seem to catch the eye of more people. ( I assume because it’s something that is a bit different than most people see).