I already have that.
The problem comes in that the cord for the machine needs to be on top of the platform, and above the level of the desk for most of the machines. So the way to bring power from the bottom, where the power strip is, to the top, means it has to be strung up and over the platform the machines live on. Because the platform is wider than the opening, I leave a cord pinch hazard. That's what I'm trying to work out.
The other thing I could do is notch the platform with a slot big enough to accommodate the cords, and then not have to worry about pinching them.
Actually, I like that better, because it's cleaner. I like having the cords hidden, and not on the desk when sewing.