While Dr Seuss’s Gack still reigns supreme, we had a great time at the deCordova yesterday building and decorating our own interpretation of the Gack. With a mermaid tail and some crazy horns, it emerged as a friendly monster that was colorful enough for kids to think it might be a pinata filled with candy.   Using duct tape, colored masking tape and fabric, more than 200 people of all ages and abilities who came to the Museum and sculpture park as part of Access Day helped to give personality and pelt to our creature.  We built it tall enough for adults to reach and gave it a long tail for toddlers to reach easily, and they did.  Here are a few photos of the process and the fruits our labor.