Each student needs:

• 1 (or 2) LilyPad rainbow LEDs, such as from this set of seven LEDs in six colors for $5 from SparkFun at https://www.sparkfun.com/products/13903
• LilyPad coin cell battery holder, switched, 20 mm; such as from SparkFun for $4 at https://www.sparkfun.com/products/13883
• 3V 20-mm coin cell battery; such as CR2032 for $2 from SparkFun at https://www.sparkfun.com/products/338
• sewing needle, such as from this set of five needles for $2 from SparkFun at https://www.sparkfun.com/products/10405
• 1 pin back (see Figure 6), available at craft stores
• Pre-Activity Safety Quiz, one per student
• Sew What?! Instructions Sheet and/or Instructions Placemat, one per group
• Post-Activity Comprehension Quiz, one per student

To share with the entire class:

• conductive thread, 2+ feet per student; such as 30-ft stainless steel thread bobbin for $3 from SparkFun at https://www.sparkfun.com/products/10867
• thin fabric (like muslin) to make the pins; ~3 x 3-inch piece per pin; the fabric color and pattern can also vary, as long as the fabric is thin enough for an LED light to shine through; pin shape and size can vary at the discretion of the teacher/students, as long as the 20-mm battery holder and pin fit on the back; see the Fabric Pin Templates-Color and Fabric Pin Templates-B&W for printable patterns
• felt sheets; each pin needs a piece of felt cut to the same size as it’s thin fabric front
• assorted items and craft supplies for decorating fabric, such as markers, pens, glitter glue, fabric stamps, sequins, paint, buttons, beads
• scissors
• hot glue gun and hot glue sticks
• (optional) clear nail polish, to seal any fraying fabric

Note: SparkFun provides a shopping cart list of the necessary SparkFun materials.