Summer is the season of more — more plans, more beach days, more weekend getaways, more spontaneous farmers market runs. And with all that "more" comes the eternal question: what bag do I carry without looking like I packed for a month-long expedition? The perfect summer tote is a rare thing. It needs to hold your sunscreen, your water bottle, your beach towel, a change of clothes, your book, your snacks, and your phone charger — all without looking like a laundry bag slung over your …