I do that too!
unplug but loop the cords thru the handle so they don't fall behind the table!
well I had an idea a few weeks ago and I guess this would help!
put velcro tape around the cord and stitch(just so the plug can't pull thru) and leave a tab
then glue a strip to the back of the table and attach them
the cord will never fall behind the table again
as you can tell fishing the cord out from under the table is a problem!