What, and hamper all chance of picnic puns?
When my sister and I were still at home with Mum, we had a phase, lasted for a few years, of arranging posh picnics - often meeting friends from other parts of the country at some suitable stately home, and bringing hampers of posh nosh, salads, nice bread and all the like. Good fun. We went to a few outdoor concerts on Hampstead Heath too. There was a noisy drunken party of yahoos in front of us one time, and when one girl kicked off her shoes, it was only my intense well-broughtupness that prevented me from filling them surreptitiously with leftover guacamole.