This weekend I painted-up some cargo crates & lockers for Warhammer 40,000. These will be very useful as furniture in my planned 'Inquisimunda' adventure-skirmish campaign, & in any future games of actual Necromunda. I'm keeping furniture & details like these separate from the rooms & scenery that I'm building wherever possible, to maximise layout/use variation. For example the vertical lockers could be used horizontally as freezers etc.
All these solid resin scenery pieces are available from Hasslefree Miniatures, in their Resin Terrain section.