To keep sand out of a beach tent, you can place an oversized towel or sheet under your tent so that people have a space to kick off flip-flops or shake off excess sand. One common option is to use a bucket of water for a quick wash, but here’s a secret: sand is actually easier to shake off when your skin is completely dry. If you take a minute to dry off, you can simply rub sand off your body with a dry towel.