When I was a kid, not only did I not protect them from dust, some of them even sat in a window seal, so one side of many of my models were sun bleached. For years I wanted a nice display case, but really no one ever comes to my model room except my wife and grandson, so there is no need. They either get their own display case (I buy the $6.99 ones at Hobby Lobby with the coupon so around $4.20 each), or I have them stored in sealed rubber made style containers.