Hanging boot organizers! I had no idea these existed. You can either purchase them for super cheap: $11.99 via Amazon or you could easily DIY yourself up one with an upcycled comforter bag or an old sheet or some great fabric.
Edit : Someone asked “These have bad reviews on amazon… Why would this be a suggestion?”
My answer is simple…I find storage options and I share them. I don’t always think to read the reviews, I’m guilty of that with my own purchases. This product in particular, I didn’t think to read the reviews because I have used the shoe versions of these and they worked fine. As for the two bad reviews this one received, you could easily solve one problem with a couple clothespins to hold the sides shut.