As I often do, I experimented with a thin turned vase made from crab apple, and then decided to pierce it, just by drilling lots of holes and giving the top edge a bit of a different shape. This resulted in the white vase in the first image.
I had some comments that I should try it with the inside in silver and the outside in darker colours, and it might look a little like stars in the night sky. So that resulted in the blue vase (rippled sycamore). And then I quite liked the idea so I mad a third one (green, also rippled sycamore). None of them are very big, the tallest one stands about 8" and is about 2.5" diameter. The white vase is simply finished with spray lacquer, the colours are fabric dyes and finished with PU varnish.
As usual all comments welcome.