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
Step 2: Step two
Step 3: Step three
Step 4: Step four
I hope you enjoy this project, It's really easy and simple. please comment, and post a pic of yours if you make one.