The electricity for my machine and lights comes up through a hole to the basment, in the middle of the room. My table was built right on top of it so everything basically stays where it is. There are some built in cabinets too.
It's probably just as well, if I moved the furniture I'd have to move the mountains of stuff built on top of them!
I have never been much of a furniture mover thouigh I know some people like the variety. When we added on to our house I actully had pieces of paper, that designated furniture, to use so that in the end, each room was designed so that the furniture went a certain way. There's actually an outlet in the floor of our family room for a lamp.