BigClives.com Neon and fairy light caps
thingiverse
BigClive designed these, I just customized them by combining his two files and adding a lens feature. He originally created it for Neons, but LEDs work perfectly as well. You can choose between a closed ball shape or an open "reflector" design. The options include changing the reflector/ball size, wall thickness of the ball/reflector, and focusing or spreading the light with the lens features. BigClive recently shared another scad for fairy lights in a Lifestream on YouTube at https://www.youtube.com/watch?v=94jJhDl6J2s. I tweaked his code slightly to make it easier to read and added an option for an open version of the design. A default STL file is included, but not all the lamps shown in the preview are part of this collection - only the globe and accordion style ones made it in.
With this file you will be able to print BigClives.com Neon and fairy light caps with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on BigClives.com Neon and fairy light caps.