Uxcell 1.5V Bulb Holder Wire Lead Screw Base E10 Lamp Socket 1 Set - Walmart.com
E10 Screw Mini Bulbs 1.5V 0.3A Warm White Bulb Light and E10 Mini Screw Type Bulb Socket Black Plastic Bulb Holder for Student Experiment Lighting DIY Accessories (30 Pieces) - Amazon.com
Miniature Light Bulbs, Electricity: Educational Innovations, Inc.
Miniature Light Bulbs, 5.1 Volt (Pack of 10) - ScienceKitStore.com