I don't have a sewing room, so I share the small guest bedroom. I have some antique pieces of furniture that belonged to my great-grandmother in there that I don't want to move. Most of the time I keep my sewing table and folding table set up. There are two rolling carts underneath for storage. When I have ovenight guests, I have to move most of the sewing stuff to my closet in the master bath. My grandmother's wicker pram houses my baskets of cut quilt pieces, so I move them for guests.
I have lots of other sewing notions and fabrics because I sew clothing, too. I keep things organized by task in wicker baskets which sit on and under the buil-in bench and shelves by the back door. I cut out clothes and quilts on my dining room table, which I put up on bed risers to save myself from backstrain. I have
my serger set up on the built-in cabinets in there so I can serge standing up.
Mostly what it boils down to is what you are willing to give up to make space for your sewing stuff. I feel guilty about leaving too much out for my family to work around. I'm seriously considering a drastic reduction of clothes and stored items in my walk-in closet to make room for fabric...... to make more clothes.