So I started with a $10 eBay umbrella adapter I already had and went to IKEA to pick the rest components. Click the image on the left for more step-by-step pictures.
I settled for a Rodd table lamp base (a cheaper and shorter version would be better but I never realized it existed!) and an Ollsta shade (you decide which size - I picked a larger one.) I liked how the wire is routed in the Rodd base - it goes out to the side and the switch is at the very top. Thus removing the base and replacing it (somehow) with an umbrella adapter should not interfere with wiring. BTW this shade can be installed with wider opening down OR up. I though it was a nice touch.
So the first step is to remove the cold shoe from the umbrella adapter. This exposed a nice hole. I then went back to Rodd lamp base. The base itself has a tube adapter which I removed. Now I had to figure out how to attach this lamp tube adapter to the umbrella adapter. An M6 bolt which I already had looked like something which can do the trick. A visit to a big box store brought me Irwin Metric Tap and Die Set. I tapped an M6 thread in the umbrella adapter. I cut of half of the lamp tube adapter and I drilled a hole and tapped the same M6 thread there. Then I cut off an M6 bolt head and screwed it both into the umbrella and lamp tube adapters.
And that was it!
