Picture of 1960's Camping Lantern Mains Plug Hack
A 1960's camping lantern I found at a local charity shop for £6 with broken battery compartment, I thought if I could find the voltage, I could wire it through a transformer into the mains and make into a bedside reading lamp.

Step 1:

Picture of
Inspect the wares, work out how you haven't actually bought a bargain but a thoroughly broken, used, shell of a lamp with a bulb in it.