This website dedicated to 3D printed Star Wars props and electronics. 
Most of my props are designed to have electronics installed where possible and can be printed on most size 3D printers.
Of course installing electronics in the props is completely optional as they can just be 3D printed and then displayed as a static prop.
I have also  designed some PCB boards to help make the installation of the electronics a lot easier to install especially for the novice builder and those with limited soldering skills.