You can make your iphone case scratch-free from sand by using a regular balloon! All in six seconds! I'm not kidding you!
You need to blow air into a balloon and hold neck to prevent air from escaping. Don't knot it.
Place your phone over the balloon and press the phone into the balloon as you release the neck to let the air out.
Is that not the most ridiculously fast and easy diy you have ever done?! I am adding this to Vingle My Summer because this is just too awesome of a diy and so useful when at the beach! Don't let the sand ruin or scratch your phone!