This is light bracket for a LED light bar I bought at Walmart. Print two of these, slide on the top rail on the Creality Ender 3 and Snap light bar into place. Simple bracket made in TinkerCad. This bracket is a tight fit.
This is the LED bar I bought from walmart, it uses a standard wall plugin. This light is pretty bright so you might have to add some tape on the front side to keep from getting blinded.