did this right after I got my Jeep back in March, just never got around to posting it up. I really wanted, still do, the net organizer on the dash but didnt want to spend the money (I know its only $30 but still).

Had some elastic velcro/fabric straps lying around $3 for a set of 2 at Lowes (in the screw/nail isle with all the drawers of misc specialty parts with the 3m and velcro). really easy mod, just pop off the top dash panel and wrap the strap around it so that it rests between the front clip and the compass module attached on the underside of the dash panel. fits nice and snug, doesn't slide or loosen. I use it to hold my phone in place and my work badge, or recipts/papers when the top is off to keep it from blowing out of the Jeep.