My Arm Can Fly. tell you all about them:
"What is a flox?
A flox is a wonderful little creature. They live in the roots of trees, and sneak out at night to collect acorns, pebbles, and other little treasures for their nests. No one is quite sure where they come from, but we're sure glad to have them around! Approximately 6 inches tall and is 9 and a half inches from the face to the tip of the tail.
Each flox comes with a booklet about proper care and keeping, their own special good luck charm made with coral and recycled copper beads."