Glass of Bubbly?

I attempted to photograph bubbles - first problem was blowing them! Seem to have lost the technique. I think I must borrow small granddaughter's bubble machine! So I blew bubbles in a glass - DIY bubbly? - if only it was that easy. I needed something to fit today's challenge for Nacreous = iridescent.

Clear sky tonight and 99% full moon. Do I go out with my long lens or not? Husband watching the rugby so anything's better than that!