Daydreaming: beach blankets

I see a lot of beach days in my summer forecast this year, and I am loving all of the new beach blankets and towels that are popping up here and there. I think if I were going alone, I would take a lovely linen towel, but for family days I am considering a big quilted blanket. Which do you take: a towel, mat, or blanket?

images clockwise from top left: utility canvas, steven alan, toastdeck towel