If you’re using papier mache eggs, you’ll want to paint them ... with a spray sealer. I like the Krylon Matte Finish for this project. You’ll keep the sheen of the gold leaf without it ...

spray paint, a Readi-Board White Foam Board, and gold foil (like the Generic 100 Sheets Imitation Gold Leaf on Amazon). The result is glamorous glassware that looks much more expensive than it is.