Yesterday at my LQS I saw the cutest thing....pincushions made from tiny clay flowerpots, painted in bright colors, filled with cotton or batting, and topped with a small piece of floral print fabric (a charm would be big enough). I imagine the person used a hot glue gun to secure the fabric to the pot. Add a couple of flower-head pins and you have an adorable pin cushion those girls could use for years to come. If time is an issue, you could spray paint the pots in advance, or even leave them the original terra cotta color. Good luck!