Low Voltage Power Solutions: Battery Holder - 3 AAA Battery Case - Triple AAA Battery Holder for Arduino, Lilypad Circuits, Cosplay, Costumes and Decorations - Set of 2 - Walmart.com
Battery Holder With Switch - 4 x AA
2x 2-AAA Slots Battery Spring Clip 3V Holder Case Plastic With On/Off Switch Lid - Walmart.com