I want to create a t-shirt that replaces shipping container cranes with the "Imperial Walkers" from Star Wars Empire Strikes Back. Or vice versa, make one that replaces the Imperial Walkers with shipping container cranes. So imagine that scene in return of the jedi where the Imperial Walkers are coming at you across the snow, shooting lasers, but instead of the walkers, you see container cranes coming at you. Or alternatively, show a container ship that is being worked on by an Imperial Walker instead of a container crane. Get creative.
Or for one that is more stylistic, you could show some stylized shipping container cranes with a dark image of the emperor in his cloak behind them (see attachments for inspiration)
Alternatively, anything that makes the connection between shipping container cranes and the Imperial Walkers and looks awesome will work, don't feel too constrained.
Another idea would be to have a shipping container crane with a Luke Skywalker like figure hanging from a rope, raising up into it, while holding a lightsaber
Or what if we made a container crane unloading containers from an imperial transport / battleship. And make the slogan, "Fixing the user experience in interstellar trade"
Include the Flexport logo very subtly if at all. You can find high res logos here: https://www.flexport.com/press