Each student needs:

• LilyPad coin cell battery holder, switched, 20 mm; such as from SparkFun for $4 at https://www.sparkfun.com/products/13883
• 3 LilyPad white LEDs; such as from this pack of five for $4 from SparkFun at https://www.sparkfun.com/products/13902
• 20-mm coin cell battery; such as CR2032 for $2 from SparkFun at https://www.sparkfun.com/products/338
• Mask Template
• sewing needle; such as from this set of five for $2 from SparkFun at https://www.sparkfun.com/products/10405
• craft felt, one 9 x 12-inch sheet makes one mask; or provide two half-sheets in different colors

To share with the entire class:

• conductive thread, 2 feet per mask/student; such as from the 30-ft stainless steel thread bobbin for $3 from SparkFun at https://www.sparkfun.com/products/10867
• scissors
• permanent markers, or any markers that work on felt
• hot glue gun and hot glue sticks
• elastic cord, string or ribbon
• (optional) assorted craft supplies for decoration, such as feathers, sequins, glitter glue, paint pens, beads and buttons
• (optional) hole punch, to make side holes in the felt for elastic cord, string or ribbons

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