its been done for a  while but i never got around to taking pics and posting them. 
i found the smallest crt and build a cab around it. the monitor is probally a 10 inch. 
i found it at an electronics surplus store and it will handle up to 800*600. 
streetfighter joystick layout. has a front mounted volume knob and also a power button. 
works great. small in size, but has a great look and feel. 
more pics here. 
http://ameliavitarelli.com/minicade3/let me know what you think- any advice or comments are greatly appreciated.