I have leather hides stacked! Along with patterns, thread, the sewing machine.....sigh!
But, what has helped me is an organizer unit that I bought at the container store. you can also get them in IKEA or Target, Home Depot. Mine has wheels,and pull out mesh drawers so my hides can breath and stack-able shelves. But, during the season, I do get overwhelmed by my product.
Good Luck!