BATTERY ADAPTER - 2X OR 3X AA / AAA - Glow Specialist
3 x AAA Battery Holder with On/Off Switch, JST, and Belt Clip : ID 3286 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Raz Magic Power 3-AAA Adapter
STL file 3xAAA to 18500 Li Ion battery adapter・3D printable model to download・Cults
Amazon.com: Hxchen 3 x 1.5V AAA Series Connection Plastic Black Cylinder Battery Storage Holder Case Adapter Black - (5 Pcs) : Electronics
Black Cylindrical Type Plastic Battery Holder For 3 X Aaa Battery Converter Box Toy Flashlight Lamp Adapter Case Converter - Battery Storage Boxes - AliExpress
AA AAA Battery Power Supply Adapter Replace 2x 3x Battery for LED Light Radio - Walmart.com
FLPT: an 18500 in a 21700 adapter is a damn near drop in replacement for those terrible triple-AAA holders. : r/flashlight
Special Offer Cylindrical 3 Aaa Plastic Battery Holder Adapter Case Box Flashlight Lamp Poverbank Power Bank Diy Toy Accessories - Battery Storage Boxes - AliExpress
Black Cylindrical Type Plastic Battery Holder For 3 x AAA Battery Converter Box Toy Flashlight Lamp Adapter for Case - Walmart.com
Battery Eliminator - 3 AAA Battery Replacement - AC Power, 4.5 V
3Pcs 3x AAA to 1x 4.5V Battery Adapter CONVERSION KIT Series Connection 53x20mm | eBay