Here's a card I made today. It's called a tent-topper card and super easy to do. You just make the card smaller than regular (I made it 4-1/2 x 4-1/2) and stand it up. Then add something that extends overtop (but keep in mind the size of the envelope you're going to use).
I am using Serene Silhouettes stamp set, ovals and deco labels framelits, banner punch and petite petals stamp set/punch! Also wild wasabi ribbon and script embossing!