Take the Plunge Swim Club
After trying several swim clubs around the local area for our children, we finally found a good one we've been very happy with for some years. They're superb at teaching young children to swim and become good at it but could only be found through word-of-mouth.
Afters several conversations the owner gave us a shot at building a website for them as a means of contact for prospective customers. We sourced photos, but out a site and launched it live several years ago.
Since then it's paid the club back over and over in parents who have found it and signed up. It's a simple brochure site but is effective for the use case they had. And our children can swim beautifully!