Making E-Z Money

The magician introduced six empty wallets. He borrows a bill from a spectator that can be signed and places it into one of the wallets where it can be seen thru the clear front.
When the wallet with the bill is rubbed against the other five wallets in turn, bills appear in all wallets.
You return the borrowed bill and take the other five for yourself…. easy money!

You receive the wallets with detailed instructions, provide your own bills.