I mostly use free cut files on my Cricut because I'm cheap like that. Occasionally though I see something that's really cute and I break down and purchase a file. There's a website called My Scrap Chick that always has excellent sales and I purchased this one for $1
This is very three-dimensional but it does fold flat if you'd like to mail it. Here's a view from the side.
I used foam mounting tape on some of the layers so when this is flat it's pretty thick. I think if I were going to mail this I would glue all the layers together instead so it wouldn't be so bulky.