My guest room bed is very high. I’ve wanted to let my grandsons sleep in it when we have sleepovers, but I’ve always worried about them falling out. Pinterest to the rescue. I used a plastic noodle, easily found at this time of year in dollar and variety stores, and tucked it under the side of the fitted sheet, near the edge of the bed. Voila! Success is a sure thing with this tip. The noodle becomes a soft barrier with just enough height to stop a young one from falling off the mattress. Thanks Pinterest.