Westfw writes –
Flashlight bulbs are common, easy to find, and inexpensive (especially in bulk), but they are a pain in the neck to attach wires to, which somewhat limits their use in assorted hobby projects, especially when children are involved.
The picture shows a “socket” that will hold a normal “flanged” flashlight bulb (somewhat) securely in contacts with normal wire. I’ll try to get more “process” pictures if I can find my tongue depressors, but the finished-product photo should show most of what you need to know…
instructables : Flashlight Bulb Socket for EXPERIMENTS – Link.