This should be all the droid parts from the 1998 video game "Star Wars: Droid Works".
I played this game a lot back in the day, and I always though it would be awesome if I actually had a library of physical droid parts that I could use to build custom droids, and now I do!
The models were extracted from the game as .3DO files. I used SolidWorks to close meshes, and combine all bodies into a single feature.