u/Due-Froyo-5418

I picked up a pair of these gorgeous vintage (probably) lamps at a thrift store last week for $4 each and I'd like to bring them back to their former glory. They work. But they don't have the top portion attached, no harp or whatever other kind of fitting would go on it where the lampshade would be attached to. I've seen lampshades that clip to the light bulb, is that what I should go with? Or does this need a harp? This portion alone is about 24 inches and I intend to use them on either side of a sideboard/buffet type cabinet, so the lampshade won't need to be big. What should I do with the top thingy? Any ideas or suggestions would be greatly appreciated.