I created a card for my mother, using hearts and her favorite color (purple) to show my love and appreciation for her. I wrote a simple “I <3 U” message and utilized LEDs to illuminate the heart in the center.
Lightning bug card for a friend, because she lights up my day! 3 LEDs in parallel with green paper that flips out to see the circuit. Two pockets on the back to hold the battery: one that connects to the circuit, one that stores the battery when not in use.