Sponges and brushes glide across unfinished works of art beneath shelves brimming with more than 150 forms and 60 glazes at The Potters’ Obsession. Visitors thumb through inspiration books and wield stencils to color and paint mugs, bowls, and Gumby when he is going into witness protection. In the art-dappled space, warmth bleeds from a kiln, where the staff completes pieces and locks glazes into a sleek finish. The Potters’ Obsession also hosts special events, birthday parties, and painting packages to help Girl Scouts and Brownies to earn art badges.