I put 2 inexpensive bookcases from Walmart in my closet. The short ones which leaves space for bolts on top. There is a built-in shelf w/clothes rod. The 2 bookcases don't quite fill the width but I keep batting in the small space between. There is room in front of them for floor stand and my worst collecting habit - shipping boxes.
I do keep majority of stash in a buffet and under the cutting table though.