Traditionally, when talking about a lab theatre, one might think about a black box space. Now however, we can test some technical ideas out in a model theatre, allowing experimentation before time is limited during tech week.
Yeagerlabs includes scaled softgoods and lighting packages.
Lightbox also has a scaled model of a theatre. I have seen this in use at USITT, but have also seen it in development at Syracuse University. This website seems to be out of date, so I am not sure if they are still in existence or not.
Both of these instruments seem to be primarily effective for lighting experimentation – still leaving room for future development for scenic automation experimentation.