Egg is right.

I wouldn't open it for nothin'

Prolly gots one a them dino sores in it. Might still be alive even.

Don't want to unleash that kinda thing in these times now, do we?

Might even be ALIEN, and you could be releasin' somethin' worser than the Corona!

LJ, all kidding aside, I'd go with geode.

I hope it's a good one too.

Geno

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?