Quantity   Component name
1 × Foam Board Obtainable at office supply and craft sotes. Other materials could be used but may be more difficult to cut. Make sure the material is thicker than the coin cell.
1 × LEDs - various colors 5mm through hole works well
1 × CR2032 Coin Cell 3..2 Volts needed to light the LEDs.
1 × 0.25 inch Copper Tape Any conductive surface could probably be made to work but copper tape is easy to apply and solder to.
1 × Glue Any type suitable for paper. Super glue was used for this project
1 × Miscellaneous Small gauge wire, solder