Feel free to experiment with different LEDs to find what works best for your project. Then carefully move the tape down around the corner — you should see the fold forming — and press down flat against the paper. Add script paper and a bow to finish the design. 15 of 24 Robot Candy Bar Card Who wouldn’t love a sweet robot-inspired valentine to celebrate the holiday? To make, use patterned paper to wrap a fun-size candy bar. Step 5: Insert Battery Once all the components are installed, it’s time to test our circuit by adding a battery.