I wanted to pratice a bit more with Fusion 360 and thought about something I know and haven't seen printed, yet.
This is a model of a unit load device (ULD) for an Airbus single aisle aircraft (A320 family) - at least I think they're the only planes utilizing this specific size.
They're used to store baggage and will then be loaded into the cargo hold of the aircraft.
The model is in a 1:25,4 scale as it was easy to just replace inches by millimeters and it shrinks down to a handy size as well.
Just to avoid any misunderstandings - the abbrevation "AF" for the thingfiles is my way to sort out things made with "Autodesk Fusion" :-)