What gear was essential for beach time with an infant? I feel like we are in a tricky stage with my 6 month old- she's not crawling but she rolls and scoots, so she can move from wherever I put her. But she can't sit up well so I can't do that little trick of a little baby pool for her to sit in. And since we have an almost 3 year old who will be running around it would be nice if I can put her down sometimes (though I'll definitely do this as a two adults two kids situation for the time being!!)

Any favorite tips and tricks?