Needed something cheap and easy to keep my dock line secured so I didnt have to take it on and off...rubber coated and inexpensive from Home Depot...seemed more versatile and easier to work with than velcro. Have one of these at each corner.
Bought this from Amazon...fits perfectly in cupholder and holds my Asus 7" tablet perfectly.You can see it here: http://www.amazon.com/gp/product/B00F0IQTE8/ref=oh_details_o04_s01_i00?ie=UTF8&psc=1