Simple Business Card Storage Box

I bought a load of business cards and used another makers holder that fits in your pocket for events. But the rest of my cards were left in a tatty cardboard box. I quickly designed this to store the rest of my cards. If they're just gonna sit on your desk, you won't need to print the top. (I quite enjoy fidgeting and putting the lid on.)

This is my first model that I'm sharing, so go easy on me.