Very imaginative, to say nothing of humorous markers. I'm tempted to try a few myself.
In the modern era, i follow the old McCoy rules for supply in which a unit has a standard 2-1/2/3-ton truck with four removable blocks made to look like boxes. When it engages in combat, one block, numbered 1-4, is removed each turn of combat. When the truck is empty, it turns around and heads for the nearest supply dump for another load, then returns to repeat the process.
Although designed for Moderns, this system would be easy to extend back to Horse and Musket armies using horse-drawn wagons.