2 x AAA Battery Holder with On/Off Switch & JST PH Connector : ID 4191 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Nettigo: Battery holder with cover and switch 2 x AAA (R3)
span style="color:#FF0000"><strong>REDUCED</strong></span><br>BATTERY HOLDER, 2 AAA CELLS | All Electronics Corp.
DIYmall 3V 2XAAA Battery Holder Case Cover Shell with ON/Off Switch PH2.0-2Pin Connector for Arduino Raspberry Pi Micro:Bit DIY Project (Pack of 5pcs)
Battery Holder - 2xAAA with Cover and Switch - PRT-14219 - SparkFun Electronics
Amazon.com: 2 AAA Battery Holder with ON/Off Switch and Wire Leads Case Back Cover 2X 1.5V 3 Volt Storage Box Cables Line Cord Wire Cell Charger (5- Pack) : Electronics