Just for fun, thought I'd share a picture of my sewing setup when we were living in our RV fulltime.
Our unit has a king size bed in it. The mattress lifts for storage, and that's where I kept my fabric and thread stash for the most part.
In the photo you can see a few narrow baskets on top of the slide out over the TV. Our 5th wheel has 4 slideouts, and I had all of them lined with these baskets, and they stored fat quarts, charm packs, threads, and patterns.
There was a fireplace under the TV, but I had hubby remove it and install 2 cabinet doors for more sewing paraphenalia.
All in all, it wasn't bad!