LilyPad LEDs Blue (5pcs) SparkFun LilyPad LEDs Blue (5pcs) is a simple pack of five LEDs. These LEDs are attached to one another, letting LEDs apart at leisure to sew into clothing or whatever else the user can dream up. SparkFun LilyPad LEDs Blue is available in a 5.5mm x 12.5mm LED size with a 0.8mm thin PCB layout.