Card weaving is a simple, easy weaving method, but designing patterns is typically laborious and requires knowledge, experience, and skill. The Weavy system helps users design and weave original patterns with or without repeating elements. In the latter case, the system automatically considers constraints such as the number of yarn colors and the cards' rotation direction. Following Weavy's construction guide, users weave the pattern they've created. Researchers exhibited Weavy at the ACM Siggraph 2013 Studio and ran a small workshop for children in Japan. In both cases, the participants quickly learned how to use Weavy and enjoyed designing and weaving objects.