I bring baby powder every time to beach! Like to snack at the beach? Easily remove sand from your hands by "washing" them with baby powder! This works great for cleaning kids up after playing in the sand box as well!
Tried this this other night. It seemed to work, but I've never timed how long it takes to phone to charge NOT in airplane mode~~ Running low on battery? Put your phone on Airplane mode and it'll charge much faster!