The Optic Surfer is a novel sensory activity: a place for visual amazement, wonder and development of logical thinking that attracts children for a playground break. There are three different moiré effects and two dichroic panels. The moiré panels fascinate with the patterns that look different from glance to glance, depending on the eye's focus. Children report that they get curious about the reason for the patterns behaving differently, and want to debate why not everyone can see the patterns. This provides the opportunity for negotiation, explaining and helping others out. This is great training in cooperation and teamwork that supports these skills in school. The dichroic panels intrigue children with their color changes, highly depending on the surrounding lights. The rainbow colors throw colorful shadows on the ground and light up friends' faces with their color-changing reflections. The optic panels of the Surfer make children wonder, think and seek explanations for the phenomena they observe.