Simple customizable birthday card

This is a simple customizable birthday card. The front side can be glued to the back side (the OpenSCAD file lets you choose if you want to print the front or the back) to make an A-frame standing card. I suggest printing in two colors by pausing print and switching filaments.

The cake graphic is from the [Noun Project](https://thenounproject.com/search/?q=birthday&i=912002).