Amazon.com: LAVA Original Lamp Replacement 25W Reflector Bulb, E14, 25W - Set of 2 : Tools & Home Improvement
R39 E14 Base Lava Lamp Bulb, 30 Watt Replacement Bulbs for Lava Lamps, Extra Long Life Reflector Spot Light Bulb, High Temp Resistant Lava lamp Light Bulb - Amazon.com