A deck usually comes with a few cards that aren’t relevant to cardists. Those are ad cards and jokers. Since they aren’t relevant you might consider just throwing them away, but I like to keep them in the box. I have seen other people do this, particularly people from Singapore. Here are my reasons.

The box was not designed to hold 52 cards

I always keep my cards in a clip. It keeps them fresh longer and makes the box last longer. However it will also squish the box more than necessary if you only keep the standard set of 52 in there.

The reason is that the box is designed to hold the number of cards that it ships with from the factory. That includes the ad cards and jokers.

So keeping the extra cards around will make the box feel tighter and make it fit nicer in a clip.

You always have spare cards

Sometimes it happens I loose a card or two. Might be because of water or accidentally leaving some behind when I drop the whole deck. And I don’t know about you but I hate using a deck with only 50 or 51 cards. It just doesn’t feel right.

However because I keep the jokers around I can always add one or two to the deck when I notice I’m a bit short. At first it’ll be obvious there is a card in the deck that is newer than the others, but after a few days you wont notice it anymore.