Sale~ 100 Clear Replacement Mini Glass Bulbs - Incandescent 2.5 Volt 0.1amp, .25w ES Heavy Duty - White Base -for pre-lit Trees & 200+ Strings (NOT Standard 2.5volt Bulbs!! *Read Full Description!) - Amazon.com
Light Bulb, Miniature, 6.3 V, 0.15 A | Flinn Scientific
E-outstanding 10pcs E10 Mini Light Bulbs Experiment Screw Base Indicator Light Incandescent Bulb, 1.5V 0.3A - Amazon.com