Casual summer outfits inspiration

Looking for (and will add some of my own in comments) extremely casual/practical summer outfits. I work as a camp counselor over the summer and will be moving somewhere hot to do more outdoor/practical work in the fall. I do not want to look office-ready or professional, but do need to be dressed appropriately to work with kids etc while also not sweating to death. Please feel free to add your own ideas or criteria!