My husband made me a "chore train" that I drag around the pasture with the riding garden tractor/mower. 35 gallon tank to hold water that has a gravity spigot and also a pump attached to a battery - makes hauling water out to the pasture so much better, especially in summer. Then another cart goes behind the water cart to carry other items I need.
Bless his pea pickin' heart for that one! Getting water to livestock has to be the biggest pain in the patoot for most any farm.