I love a good kit list, I don't know if this is one, but it's what I carry for a weekend summer bivvy when it's less likely to rain. Of course a forecast is just a forecast, so I carry enough to deal with unexpected cold and proper rain. I've aimed to be realistic and list everything, I often see very low quoted base weights which miss things like basic first aid. I'm sure there are few items here that would raise a quizzical eyebrow from the ultralight crowd. For instance I love wild swimming, so I carry a reasonably sized modesty protecting towel, while some would wipe themselves down with a napkin from Greggs whilst proclaiming "it weighs only 2g although the sausage roll crumbs are bit itchy".
Things I notice as I walk along, mostly hiking, hills and history.