One very inexpensive and effective elevator that hasn't been mentioned is a clay flower pot. Clay is a fairly good non conductor and thus does not conduct static electricity. These pots are heavy enough to stay in place, come in a variety of sizes and shapes, and can be left plain or easily painted to match your taste.
I place the pots upside down for maximum stability and use about 1 pot for every 2 feet. Since my cables are fairly stiff, they stay in place on the pots and there is no need to fasten them down. If necessary, you could tie them with a string around the cable and through the hole in the bottom of the pot to short piece of pencil or dowel.