There are many cities who have rock hiding Facebook groups in the U. S. There is a group here, we put our painted rocks in random places for strangers to find.
I have been hiding rocks for kids, because we are still in Phase 2, and kids have been robbed of their childhood this summer. Especially heartbreaking because our winters are harsh and there is no rock hunting in winter.
These are for folks like me who don't have a lot of patience, or use rocks as a “canvas” for fancy painting.
Ladybug Rock Supplies: Acrylic Paint, Small brushes, Spray Gloss or Mod Podge
or use acrylic paint pens.