Space hulks
Some attachments give you particular abilities, rather than simply increasing your station’s population or power output. The grappling hook, for example, can be used to reel in objects so they’re close at hand for your engineers, but you could also affix it to an ersatz vehicle and tow your station that way. 4gency has also provided inspiration in the form of small, pre-built examples of habitats, which can be found floating in orbit with you. Some might be farms, while others are bundles of militarygrade weaponry. You can expand on these as you wish, because there’s no limit to the number of habitats you’re able to build.