How to Make 18650 Battery Holder at Home : 6 Steps (with Pictures) - Instructables
18650 Battery holder from ElectronicTricks on Tindie
Amazon.com: BestTong 18650 Battery Case Holder, 2 Slots 3.7V DIY Battery Storage Box in Parallel or Series Plastic Batteries Case with Clips Pins Contacts for Soldering 2 x 18650 Pack of 2 : Electronics