It seems like wrangling stuff for summer activities is even harder than grabbing everything needed before you leave for work and school. A new survey asked people what summer essentials are most often left at home, and the most common responses were: Cellphones . . . water bottles and drinks . . . personal products like deodorant, body lotion, and makeup . . . and sunscreen. Of those, only 20% would NOT go back for their phone . . . 30% would continue on without deodorant, lotion, or makeup . . . and 26% would risk a sunburn by not turning around to get their sunscreen. It might depend where you’re going. You can’t just pick up a replacement phone . . . it’s just whether you REALLY need it. If you’re headed to a pool or a beach, you might be able to buy what you forgot nearby. But if you’re going camping or headed out on a lake, you might have to DO WITHOUT.