Video by BenjaminNelson via YouTube
Source
My Ryobi Light Bulb Adapter lets you plug a light bulb straight into a Ryobi 18V bulb!
The only requirement is that it’s a low-voltage bulb such as the type used in RVs. Most (but not all) bulbs labeled as 12V will run just fine from the 18V battery.
The best bulbs will be ones designed for 12 OR 24V systems.
These bulbs by LeMeng work GREAT: https://amzn.to/3RoLgM9
Get your own Ryobi Light Bulb Adapter at: https://300mpg.org/shop/
Here’s a long-format video about the project: https://www.youtube.com/watch?v=nLNqwOpsZps