Biology props and Boiler room

Just a few additions this week:

There is a projection screen in the reference photo for the biology classroom (tables, chairs, and microscopes were posted earlier) ...

So I naturally had to create a period-appropriate slide projector, illuminated slide, and accompanying light shafts (the light shafts "shimmer"):

Also, I have an idea about the boiler room, so I started creating the bones and props for that:

Exterior door

Coal-fired boilers

Stairs to the outside