Dragon egg alchemy: Dipping dragon eggs in potions causes them to turn into the potion of the closest color to the dragon’s color.

You occasionally receive a dragon egg as a sacrifice gift.

The Caveman quest goal level contains several dragon eggs of random colors beneath the Chromatic Dragon.

Adult female dragons drop eggs (more so than the usual oviparous drop odds).

Dragon eggs should be usable as thrown missiles, having interesting effects on whatever they hit. Black dragon eggs should specifically have a disintegration effect.