I have been bringing my computerized embroidery machine and a fetherweight with me for years in our rv. We spend 6 months in Maine in the summer and I sew for several businesses there "for lobster". I also make a few quilts. Fabric is readily available up there but other sewing supplies are more challanging and I do a lot of computer ordering. Storage is a challange, but my husband will tell you i have supplies all over and use too much space. I found a folding plastic table at BJ's warehouse for the machine and a multi drawer plastic stand about the same height for the embroidery unie ( Viking Diamond) I also have plastic tubs that slide under the RV when we are parked . The picnic table is sturdy enough for the cutting boards outside and if the weather is nice the fw and I sew out side. Campground rec centers are also a very useable space if you are there for a while.
Sheila