Didn't know rather to put this in gallery or here, but since I needed community help i thought this would be the best bet.
I'm making a Foundry DM and asking the community for help, not building help, but ideas; the build it self is going great but I'm not sure what else i can build in it, so any good suggestions would be helpful
Pics

The bottom part is done really, but i doo need to build something on the walls, some valves and pipes or something

the top is where I need the ideas for.
Try to ignore the yuck white lines, map made them stand out horrifically.
Suggestions: