Since I started in my business I found out that the business card holders you can buy are, for the most part, pretty useless. They break easily, they don't carry many cards and they're boring. So I decided to remedy that situation. I started working on a business card holder which was able to carry a decent amount of cards, could also fold out and double as a stand and was just a little more interesting. I'd just about finished the design when I looked at it and thought 'you know..... that's a cassette box' (ask your parents, kids).
I've been using mine ever since, and I've also started offering it in my Etsy store (www.etsy.com/uk/shop/enterprisexddesign) with an option to personalise it with someone's logo or name. So if you want one and you don't have a printer just nip over to my store and order one!