Remove the toe kick from the bottom of the bathroom sink, it should pry off, if you brake it not a big deal just get homer to cut a new one. Go to the hardware store and buy 2 to 4 magnetic door catches. Put the metal plates on the toe kick and screw the magnets into the sides at the bottom and top, put back in place. Room for a few pounds in there and you can get at it easy, no shit....Just a thought