I have 2 sewing machines, one treadle, and an embroidery machine. One wall is a full closet (meaning the length of the room), one is windows and another is Murphy bed with shelves and drawers. My last wall is where I have my TV, and a cork board (I pin my new patterns on it and pictures that I like).
About every few years I rearrange the room. I have shelves and a cupboard from Ikea, I prefer to keep my tools in drawers and storage areas than hanging on the wall.