We have a Shapeoko CNC will which can many designs into wood and other materials. A great place to start is thinking about makeing a name plaque or even inlaying a design in wood.
The sky is the limit with what you can design.
The milling software pictured is called Easel. It is easy to use and avalible online for for free.
Here is a description of how you can us the CNC to make inlays
Web Resources
http://www.shapeoko.com/projects/project.php?id=155
http://designandmake.com/family-coat-of-arms-achievement-pack-no1/
http://www.marvinstuart.com/cnc-project-3/
Software: