You may pull out the wallet from your own pocket, using the gag as an introduction to a coin or bill trick you are going to perform, following up with the coins or bill removed from the wallet. Or you may pretend to find the wallet (dropped by some one in the audience) and opening it to discover the owner!
The apparatus we supply consists of a specially gimmicked wallet. The wallet has two compartments, one fitted with the fire gimmick, and the other with compartments to hold currency notes or a couple of large coins.