whenever someone asks if I would like a little something from their travels, I suggest a rock. My son is a rock lover too, so inevitably they are many, in my car, my handbag, pockets all on the way to the windowsills in the house.
Now we are travelling it seems we must be frugal with our selection. I carry them in my coat onto the plane, so they don't end up being excess baggage fines.
Here are some people who are doing beautiful things with rocks - I am in love with this today.