Here is a money holder birthday card that I made for my son to give to his friend. The money holder is a Silhouette America image that can be downloaded into different denominations. Each denomination has a different cut that coordinates with the different faces of the bill. I downloaded the $20 and $50 images, which gives me the flexibility to gift any amount over those amounts behind the top facing bill...hope that makes sense. This was a super simple, no fuss, quick to make card! :)
I adhered the money holder to the base of my card which gives me (or my son) a place to write a greeting to the recipient.
Here is what the inside of the money holder looks like.