Oof, where to start.
Egg made out of plaster by filling an inflated balloon with a bit of plaster and leaving it to dry.
when dried i removed the balloon and broke it and started painting it, dark blue/black inside and blue dragon scales on the outside.

when dried i added a layer of epoxy resin mixed with glow powder inside so it glows at night, if leaving it out in the sunlight at day that is, otherwise the glow will only be soft. then as finish a layer of fabric hardener spray to give it a darker colour and more strength.
also great to put candles in.

it's around 6x5 inch