So many people have discussed organizing their sewing rooms, I thought I would share this pattern. I've used it for things other than my machines, but it rolls under the sewing table nicely and I can change out the machine I want to use, keeping the others out of the way - but close at hand. I also have a couple screws on one end of it so I can use a power strip and take my machines into an area not close to an outlet.
Forgive me for not having the picture of it in this posting. I just couldn't figure out how to get it here. The attachment has full instructions in pdf. format.