Kitbashing is a great way to add complexity to your Blender projects. Using assets from your own library, or free ones from sites like Blendswap, PolyHaven or Sketchfab, but quickly modeling your own is easy too! Scenefiller shows how to throw together some stairs, pipes cables and more that are convincing enough as background material for your scenes.
I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.
