These are a fun little project that i made in less than twenty minutes.
All you need is: yellow LED, paper, watch battery, and tape.
I want to apologize for the horrible quality picture. it was the only one I could take while lighting the light bulb up. So, sorry.
Step 1: step one
The first step is to take the piece of paper, and fold it in half. Next draw your best half light bulb shape you can, using the folded edge as the middle of the shape. Then, cut it out. It should look something like the second picture.