I bought a small box from a computer store for a buck, I think it was originally used to store some small computer thing. It snaps closed, and it has its own smaller compartment (probably for a cable) which I use now to HOLD the dice that aren't being rolled, while the larger compartment holds the dice that ARE to be rolled. I throw the subject dice into the larger space, close the lid and then shake the box, open the lid and read the results.