POSITRON JourneyMaker, upside Down Portable 3D Printer
Folds down to fit inside a 1kg filament box. Upsidedown let's the complicated moving bits be in the base where there's less vibration. Krylan3D originally designed this to easily take in a backpack back and forth from college, but is now hired and working on designing other 3d printers. So the community has made improvements and made it easier to make yourself. Parts cost about $550.
Love to see working on creative concepts like this. Even if it’s not mainstream solving problems like this results in the community having new tools for other ideas.
Take, for example, the QuickDraw probe and then Klicky and Unklicky which uses the magnets as the switch.