Have you got a mate who is playing with a few cards short of a full deck?  (ie. he's not playing with a full deck).  Then help your mate out by purchasing him a new full deck... better yet play a hand or two of Black Jack or Poker to kill some time while sipping a hot brew and sharing some Weary ANZAC biscuits!

Great for killing time in the trenches, or fun for the whole family when traveling, having a picnic or camping in the great outdoors without your mobile phone or Nintendo Switch... 

Note: Batteries not included! ;)