I've seen lots of hints suggesting Dollar Store ponchos to carry around. Our dollar store has two different kinds - the thin plastic ones that fold up super small, and some heavier plastic (PVC, I believe ones). The heavier ones look like they might last better, but they'd be heavier and hotter. There were also some cute child-sized PVC ones with Pooh on them, which is what I think we'll get for the kids. Which ones should I get for us? We're traveling next week, so I don't expect it to be super hot. Thanks!