The salvaged remains of numerous previous creative exploits, excavated from inventory purgatory.
These items are a mix of incomplete projects over the years, parts from old sim builds, as well as projects that didn't make the cut for Greeble.
There may be some assembly required, as well as building knowledge, as a lot of these items will be:
unfinished
unscripted/only basic functionality
untextured/not fully textured