Those of you who are familiar with Warhammer 40K know about chainswords. You can’t exactly buy one these days, but you could 3D print a full-scale version to display in your home. In fact, a 3D printed full-scale chainsword was recently spotted at Games Workshop Parramatta.
Seems like a pretty fun project to try if 3D printing is your thing. We would love to get our hands on the files for this project.