A: Well, the Fluxx Dice box is the exact same size as all our other deck boxes, but instead of the cardstock two-deck separator, it has a plastic tray to hold a single card stack. So if you’re wanting to combine a deck PLUS the dice, the real question is whether a regular deck box has enough room to add the dice, since it’s more practical to add the dice and couple of cards to a box with the appropriate insert to fit two card stacks.
So we went and tested this. The dice are a bit larger than your average D6, but if you pile the deck so that one side of the box is as full as it will go, leaving just a few cards in the other half, there is enough height there to hold the dice on top of the smaller pile. Basically, yes, it’s possible, you just have to adjust the heights of the card stacks to make room on one side for the dice.