9V 9 Volt Battery Holder Box Cover with ON/OFF Switch Pack Power Toggle 6" Lead | eBay
How to Connect a DC Motor to 9V Battery with On/Off Switch - Very Easy - YouTube
Amazon.com: Genssi 9V Battery Box with On/Off Switch 9 Volt Battery Holder with Power Switch Clip : Automotive
5Pcs 9 volt Box Pack Power Toggle Black 9V Battery Holder I/T Type Battery Clips Connector Buckle with ON/OFF Switch,DC5.5 P|Wire Junction Boxes| - AliExpress