Oh man, my wallet is full of magic, I carry on all the time
a pack of loops, Prophet gimmick, a regeneration gimmick (not a playing card), a single normal playing card, I know some impromptu bills tricks, there isn't much space for coins in my wallet so, I put them in my pocket but if there is, I definitely will have some, I think that is pretty much it,
If I have The Rogue's wallet from ScamSchool oh man that would be perfect with my setup,
The reason I have all of these because I don't like carrying a deck of cards all the time and you don't know when it's going to be a good chance to do magic, in short words I like to be ready.