My vet uses a shipping container for hay, he really likes it. I see them all the time on craigslist – I thought about it, but all the ones I see are $1300-1500, which was significantly more than my carport ($800 IIRC). And the carport price included a crew of people bringing it & installing it for me, which is a nearly non-existent luxury in my life.
But my carport doesn’t hold as much hay as a container, so if you need the space, the costs may work out.
As for my tarp hatred, that is for ALL tarps. I hate trying to fold them, I hate trying to store them, I hate fighting with them (which just gets worse the larger they get), I hate that they are noisy, I hate their adoration for blowing in the wind, I hate that there is always some edge the water will somehow find. I still use them on a couple things, but I curse their existence every single time & would rather jam forks in my eyes. Yes, I have a grudge against tarps.
I also do have one of the two-wheeled yellow heavy duty wheelbarrows. I almost never use it because I don’t have stalls, but it is very stable & well-balanced. It’s fairly large capacity & when I do need it, it’s easy to use. I would like to have one of those wheeled cart/wagon things tho, I just don’t have money. Sigh, I give it all to my vet.