Watch the full video (1 minute, 20 seconds).
Step 1: Supplies
You can also watch the video here and see the final result in action.
Step 2: Prepare the Frisbee
Step 3: Take Apart the Yoyo
Step 4: Remove the Shaft
Step 5: Assembly!
The centrifical force caused by the spinning frisbee when you throw it will turn on the LED lights just like the spinning yoyo. The batteries will literally last for hours, and can be replaced simply by unscrewing the assembly.
The instructions may seem a little more difficult than it actually is, or might seem confusing.
This video shows the entire process, as well as the final product in action, and should clear up any questions you may have as far as the steps are concerned. Have fun!