Each student needs:

• 1 LilyTiny microcontroller; such as from SparkFun for $5 at https://www.sparkfun.com/products/10899?_ga=1.37861539.1473012636.1478227346
• LilyPad coin cell battery holder, switched, 20 mm; such as from SparkFun for $4 at https://www.sparkfun.com/products/13883
• 5 (or fewer) LilyPad white LEDs; such as this pack of five for $4 from SparkFun at https://www.sparkfun.com/products/13902
• sewing needle; such as from this set of five needles for $2 from SparkFun at https://www.sparkfun.com/products/10405
• 4 alligator-style test leads; such as from this multicolored pack of 10 for $3 from SparkFun at https://www.sparkfun.com/products/12978
• 20-mm coin cell battery; such as CR2032 for $2 from SparkFun at https://www.sparkfun.com/products/338
• Monster Template
• craft felt, one 9 x 12-inch sheet makes one monster

To share with the entire class:

• conductive thread, 2 feet per toy/student; such as from the 30-ft stainless steel thread bobbin for $3 from SparkFun at https://www.sparkfun.com/products/10867
• stuffing for monster toy, such as fiber fill, cotton batting, cotton balls, fabric scraps, etc.
• hot glue gun(s) and hot glue sticks, for placement of components
• scissors
• sewing thread (non-conductive), such as nylon, cotton or embroidery
• (optional) assorted craft supplies for decoration, such as faux fur, feathers, sequins, fabric paint, glitter glue, paint pens, beads and buttons

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