Actualy I make them myself. I curently use styrafoam to stick the dice in but this would be a bad thing for long term storage. I am looking into having a die made for "ethafoam" (suposedly archive safe foam) to put in the trays. I take an acrylic box piture frame and cut the top out of the cardstock insert, put foam in it and press in the dice, then put the cover on. An 8 1/2 by 11 frame of this type fits into a 1 inch 3 ring binder with the rings taken out for a "dice Album"