I needed a little more light in the room, and the lightbulbs I had could´nt be screwed up anywhere. Therefore I got the bright idea to let the printer solve the problem. ;) Hopefully someone else can use them for bright ideas as well. They are made to fit the bulb sizes E14 and E27.

No support is neded, 30% infill should be enough but it never hurts to do it entirely solid. When you play with electricity, you should obviously be as careful as you can put up with (especially when you produce the stuff yourselves).