The document discusses the evaluation of various logo, membership form, merchandise, and poster designs created for Surfers Against Sewage. For the logo design, the author notes that their initial design featuring litter in the shape of a surfer fulfilled the purpose but was not eye-catching enough. Their subsequent surf-themed logo was more positive and customizable. For the membership form, the author's initial leaflet design fulfilled the content purpose but had layout issues. They improved it by changing to a booklet format. Some merchandise designs like a cushion were not effective. The author realized posters needed negative imagery to stand out, against their initial goal of positive imagery.