Desktop Robot Free 3D print model

This is a VERY simple robot that I constructed to be printed...... It was submitted especially for the Kid's Toy Contest....

It is 5 cm tall and 3 cm wide.... No Color.... Can be printed in most metals and plastics, also able to print in sandstone.... .7 mm thick (for the head, everything else is solid)

Note: This is my 3rd (I believe) printable item, and the only one I know will print..... so be easy on the critiques ;) If you have any suggestions for a similar model, let me know! I'm always looking forward to some feedback :D