LED Bulbs: Their shapes, sizes, and bases – Christmas Light Source
Light Bulb & Socket Guide: Info on Sizes, Types & Shapes | PartyLights
LED Blue Light Bulbs 4 Pack - A19 E26 Base Blue Bulb 9W (60W Equivalent) , Colored - Blue Lightbulbs for Outdoor Porch, Indoor Bedroom, Christmas Party Decoration, Holiday Lighting, Halloween Decor :
26 Types of Christmas Lights for All of Your Holiday Displays - Bob Vila