Did you think to put your Vault of the Fiends cards in standard card sleeves? And then what? Where do you put them now? The original box will not be able to hold them anymore so this are two boxes to carry this game around, while the cards are well protected inside those sleeves. Just print this PDF and cut along the edges and use double sided tape (I worked this is to be the best method but YMMV) to put them all together.