"Five-Minute Paper Circuit Greeting Card DIY Materials You'll Need Cardstock or heavy paper Copper tape LED lights (assorted colors) Coin cell battery (CR2032 or similar) Conductive thread (optional) Decorative elements (markers, stickers, etc.) Step-by-Step Tutorial: 1. Prepare Card: Fold the cardstock or heavy paper in half to create the base of the greeting card. 2. Create Circuit: Use copper tape to create a circuit on the front of the card, connecting the positive terminal of the battery to the positive terminal of the LED lights and the negative terminal of the battery to the negative terminal of the LED lights. 3. Add LEDs: Place the LED lights along the copper tape circuit, ensuring the positive and negative terminals are aligned correctly. 4. Secure Battery: Attach the coin cell battery to the copper tape circuit, ensuring the positive and negative terminals are aligned correctly. 5. Test: Close the card and press the battery firmly against the copper tape to complete the circuit and light up the LEDs. 6. Decorate: Use markers, stickers, or other decorative elements to personalize the greeting card. 4. Secure Battery: Attach the coin cell battery to the copper tape circuit, ensuring the positive and negative terminals are aligned correctly."