EitanI designed a replacement wristband for my childhood Casio watch. I think you should know. https://www.printables.com/model/1630544-casio-strap
Uckermark MacGyver 
@eeejay wow, that looks very cool!
I designed a replacement wristband for my childhood Casio watch. I think you should know. https://www.printables.com/model/1630544-casio-strap