Amazon.com: Lenink Adjustable AC Power Supply Adapter for 2-4 AA Batteries, AA Battery Replacement Adapter for LED Lights, Decorations (Black) : Electronics
4 AAA Dummy Battery Adapter USB Power Supply Switch Cable Replace 4 AAA Batteries for Remotes Camera Toys LED Strip - AliExpress
4.5v AAA Battery Eliminator USB Power Supply Replace 3x AAA Battery with Switch | eBay