I go out and drop $1300 on a P3P but am too cheap to buy a commercial sun shield for $10. So what do I do? I grab a empty Herbal Tea Box cut a few holes in it with my trusty razor knife add a little tape, and and voila, a 100% all natural, caffeine free, sun shield that fits my iPhone perfectly! . Spray paint the inside flat black, and the out side your color of choice (or leave it All Natural) and your good to go. Total project time ~15 minutes.