As I am lucky to have my own sewing room I have sticky taped two tape measures to the edge of the table, one in centimeters and one in inches.
This tip is from my daughter in law and one that she uses in the classroom to keep her cords neat and tidy. They are bull dog clips and they keep the cords from getting tangled. I have my appliances in the power point and then clipped to the end of the table, sewing machine cord, Ironing cord, mini fan. I also have a non slip mat on the whole of my sewing table too.