Stonemason's Modular Sci-fi Kit 02 may be an older set, but it can still be incredibly useful. Either as full scenes or just little doodads sprinkled into your renders, it still holds water. In fact, I've used it so much over the years that I've created actual scenes using this prop set almost exclusively.

With Scene Subsets for Modular Sci-fi Kit 02, I've updated the shaders to work better for Iray (with my style of settings), included a few alternate textures for on-the-floor props, and set you up with 5 scenes.

The 3 scene subsets intended as individual scenes are optimized for your memory, loaded with instances instead of unnecessary copies of props so you can focus on populating your image, rather than worry, "Will it render?"

The 2 scene subsets intended for instancing will have multiple copies of props, but only so you can load up on blanket instances, making it very easy to go from a single apartment balcony to a full apartment building... if you have the memory!