My late Mother-in-law's mortar and pestle.
No great rarity—you can get similar ones here—but obviously this one comes with a lot of history attached.
Solid stone and of a considerable size, I carried it back from Malaysia as hand luggage. Not sure of the exact weight, but my arms have not been the same length since.
Seen here full of freshly-ground, dark-roasted Sri Lankan-style curry powder. Nearly time to make a new batch!