6 Set DC Motor Kit, Rectangular Electric 1.5-3V 24000RPM Mini Motor with 86 Pcs Plastic Gears, 2 x AA Battery Holder,Motor Mounting Bracket,Boat Rocker Switch,Shaft Propeller for DIY Scien - Walmart.com
How to Make 18650 Battery Holder at Home : 6 Steps (with Pictures) - Instructables