Sand all over your blanket at the beach is no fun, so reader Fred sent in this tip to turn a fitted sheet into a sand-free blanket box. The photo tells the tale, and all you need is a fitted sheet, and the coolers or other items you're probably taking to the beach with you already. Fit the sheet up around the coolers, and spread it out.
It's pretty much the same idea as taking a normal blanket and putting rocks or coolers on each side so the wind doesn't blow up the edges. It's worth noting that most fitted sheets are pretty thin, so while this looks great, it might also be really really thin if you're sitting down in it, and moving around in it might ruin the whole thing. You may also want to put your normal beach towels down inside the sheet — which may defeat the point. Your mileage may vary with this one, but we think it's definitely a clever idea.
Fitted sheet at the Beach [I Have Seen the Whole of The Internet]