We have an RV motorhome and I have a permanent place for my small Janome Gem. I also have an Ezisew table it fits into, and which is very easy to store. It is also extremely stable and can be wheeled over to wherever. I use the dinette table for cutting, and have a small traveling iron and a small ironing surface which I put up on the kitchen counter. I try to keep most of my "this year's projects" in a large flat-ish (6 in. high) plastic container, which is easily storable as well. My cutting mat fits into this nicely, along with my travel iron and iron surface.
We usually go down to the desert for a few weeks in the winter. Not having a sewing machine for weeks on end would drive me wild. I think I'd have to actually go buy one.