Growing up my mom, sister and I shared a 4th bedroom as a sewing room. We had two sewing machines and a tall drafting table in the center. It was great. Now I covet my DH's music studio. We built that for him when we moved to this house (old rock 'n roll guys are more a pain then young ones). It is 20x20. I share a tiny spare room with the computer and his closet, and it is a walkthru to an outside deck. I wish we had built a double room when we built his studio