After messing around with the $1 to $5 dollar transposition, I came up with an idea (using our favourite Raven type toy) that would allow you to get away clean with everything, even allowing inspections by the spectator.
While I'm still working out the logistics, does anyone think this might be useful? If you have questions, PM me. And don't worry, no TT's.

Can you give a more descriptive writeup of what it would look like? Is this similiar to the old effect where both bills are rolled?