I really like the underbed flat clear bin idea. Currently they all have to be on the top shelf of my closet because otherwise the cats will get them, smaller ones in plastic shoe boxes that hold one or two pairs, booties and boots lined up on top of these. (Yes, my cats have figured out how to slide open closet doors - luckily they leave clothes alone as long as leather belts don't dangle too low. This is the reason my leather purses live on a shelf in the linen closet, which has an actual door handle to close it.)
Gear shoes are on floor racks near the door or in the garage, and for some reason the cats leave these alone--- I guess they prefer the smell and chewiness of fresh, clean leather fashion boots.