BigBoxCollection: high-res 3D boxes of over 800 games from 1982 to today
Remember When Video Games Came In Big Boxes?
3d
Teaching Tech 3D Printer Calibration
It aims to make calibrating your 3D printer as easy as possible.
AstriaGraph
Satellite, rockets and debries in orbit. Interactive 3D view
Free and open source 2D and 3D game engine
Godot provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel.