You know you will find some uses for these... They are authentic USPC printed boxes for Jumbo Bicycle Card decks. (The decks are NOT included -- just the empty box).
You can use them for a gag: put a mini card box inside of a poker size card box, and put that inside this jumbo box. Say you want to show them a really "big" card trick, and bring out the Jumbo box. Open it, and tip out the regular sized deck. "Oops, well, maybe not that big!" Then open the poker box and tip out the mini deck! "Okay, a really small card trick!" Open the mini box, and dump out some confetti or teeny tiny cards. "Ah, forget it!"
Use them to carry your rope and scissors for your favorite rope routine. Show the big box, saying you wanted to do a card trick for the audience, but you know they don;t like card tricks, so how about a rope trick. Dump out the scissors and rope and go into your best cut-and-restored routine.
Or use them to decorate your magic den! Your wife will love the look!
You get THREE boxes -- they ship flat and are easily assembled without any glue or cutting, etc. Neat design just requires pulling a long flap through the box proper and out the other side. Voila, perfect three-D box.
(The blue deck shown in the photo is a regular poker deck, included in the pic to show the scale of the jumbo boxes -- it is NOT included with the set of 3 jumbo boxes.)
Oh yeah, you can keep a deck of jumbo cards in them.