I do have a pair too, I think Boji is another name for the Moqui...
If I recall right, they are used for harmonising energies by holding each of them in one hand and feel the energy run through the body.
Just lying in a room they balance the room energies too. They should not be separated and should be touched regularly ... or so it is said.
There is a myth around them saying that they appear on the surface of the earth at times when balancing is most needed.
Have a lot of fun with them and treat them as friends, you can also carry them on you, one in a pocket on each side.
Love
Simone