There are a variety of options when it comes to business cards, and you have probably already seen a lot of them- glossy cards, linen texture cards, rounded corner cards, cards with foil printing, cards made out of clear plastic material, and more.
This example isn't about any of those special options. Instead, it's about a nice colorful design for a business card.
Check them out:
These cards were created for a science teacher in Idaho. They include a personal photograph of the mad scientist himself experimenting with colored fire.
It's not a super special printing or production process that make these interesting, but instead just the quality of the printing. A good design with rich colors.