For this project, I was asked to make 2 business cards. One with a normal 3.5"x2" layout and the other a nontraditional layout. The first normal layout I thought was boring by itself (it had blue filled in where the liquid in the beaker would be) so I instead decided to die cut the liquid out and place cellophane between the cards before placing them together. Allowing you to see through the card.
The test tube was simply to get a unique shape that still fits into a wallet. I liked the idea also since there are many ways you could display it whimsically on a desk.