This weekend, I built a little portable soldering kit out of my old soldering station, powered from a Makita tool battery. I made this thing to help with maintenance of our bicycles' electrical systems, so I can solder right on our bicycles without running cables.
You can download STLs and OpenSCAD models on Printables, link below.
https://www.printables.com/model/943997-portable-soldering-station-powered-by-makita-tool