I will take you through the process as I worked it out.
I found this (heavy) lamp base at a salvage store for under 5.00. (I think 3.00)
I bought this tray tagged Ikea when I was visiting my children. It came from Goodwill for 2.00 . (I shipped it home in my suitcase!)
I thought the two should meet each other.
I don't remember if I took pictures of the process the first time, but I didn't find them.
I took the metal ring and the glass top off. (I have an "idea" for those two pieces later.)
Then I cleaned the base and tray well and primed them (or at least the base-I forgot to prime the tray).
{ I love Kilz spray primer! It gives a good coat the first time. It may be more expensive but I found I use less than other primers. I also use it a lot and if you buy, I think it's 6, you get a better deal at Home Depot.}
I glued them together with Gorilla glue but found later that the base wasn't big enough, and so there wasn't a good connection/bond. I (easily) broke the tray off. (FAIL)
I then added a wooden cutting board to make it more stable. That is what you see in the picture.
I then primed the bottom with automotive black primer (because it was closer to gray I guess) and then I spray painted the new parts with Rust-oleum Metallic Matte Nickel spray paint. (Metals are in this year!)
And here it is finished. This isn't the best picture but I get excited to take things to the store and forget to take "afters".