Tips for a beach day with 10 month old?

When our beaches open up, I want to take my son but I'm wondering what are some good things to have on hand. He crawls around, so I think a baby shade thing would be a waste of money because he doesn't just lay there anymore. However, we will bring a big umbrella. I have a swim suit and sun hat for him, sunscreen, and I heard a trick to get sand off is baby powder so I will have that on hand. What saved/made your beach days with baby more enjoyable and relaxing?