I need to remember that I made one of these, so I'm posting a pic as my virtual Pinterest. Hopefully, I can find the dimensions somewhere. It's a fun card to give and even more fun to make.
It's called a flip card, I think. And I believe I was inspired by Catherine Pooler. She has a great site and is a real teacher. Not only is she my "manager" at Stampin' Up! But she also makes a great coach/cheerleader.