[godsmokescrack]

I'd rather play with cards as well.

You can easily set up the cards with two honest Players. Player 1 sorts and makes four piles S-C--H-D. Player 1 looks away, Player 2 puts 8/12 markers randomly on either the first two piles or the last two piles, then randomizes the piles (so Player 1 gets no information from the order).

The hard part is how to do the trading with real cards. You would have to structure/limit the trading a lot instead of the free-for-all that seems to be going on.