DZS Elec Black Round Light Bulb Holder with Lamp Shade Attaching Finial DIY Lighting Accessories Clip On Lampshade Adapter for Lighting Fittings

They work for our needs. They move around on the lightbulb, so it may not work with all lamps.

I purchased a lamp shade that was supposed to be a clip on. It was not. So, I saw this apperatis, while scrolling around. Does the job!

Great lamp shade holder!

It was perfect for my vintage lamp.