I looked for a Business Card design and did not find anything that i like or only found paid designs. Anyway, this is my design.

The design is square shaped but if you edit the scale of it (remove uniform scale) you can turn it into a rectangular shape. The attached photos are rectangular.

For both, i used 75% scale on either the X or Y axis (uniform scaling removed)

I think i may have made the lid little to tall, maybe be its height 50% or 75%.

The lid in the photo is 100% and i would not recommend pushing the lid all the way down onto the base, i think it would be difficult to remove it