Have you ever wanted to be an astronaut? Now is your chance.
Using any 3D scanner to scan your face (Occipital Structure Sensor or Intel Realsense come to mind) or itSeez's 3D avatar tool (free version to test
here until my app is ready) and my helmet STL file
here to subtract your watertight face scan from the helmet, you can then 3D print of upload it to Shapeways to print (if in color make sure to follow their guide on creating & uploading a color file - WRL works best). Also make sure to provide about .1mm size reduction in your face model to fit the cavity properly and slightly bore out the inset hole (.1 mm) that aligns with the peg.
I would be happy to do this for you $15 if you provide me an evenly well lit portrint image of yourself with either neutral or slightly smiling. Use the example link above to test your image file before sending. Contact through my Shapeways store if you are interested.