I'd suggest that you research the old Gypsy Readers and how they would "burn" large sums of cash in order to remove this or that curse on a family... I'm working on a case with local law enforcement in which the "psychic" pulled that very same stunt...
Outside of that you might check out Annemann, I know there's a could of idea there, you can make an OM Box, buy a Change Bag... there's virtually HUNDREDS of methods for bulk switches to be found in BOOKS. As to which one will prove to be "the best" depends on what your performance settings are, what you wish to portray or project as a performer, etc. What would serve one person in this capacity and work flawlessly might not be right for your situation thus, it's not "the best" for you.
Long story short, start grabbing the books and studying. Start experimenting with methods you already know that are used in stage or parlor magic and see how you could adapt them, making your own set-up that works best for you.
To become a "real" magician and live up to that title, means that you compel yourself -- you challenge your own creative nature and your create. As I used to say in my stage illusionist days,
Think of the impossible and then work backwards until you come up with three different ways of making the desired effect happen. Then, work with the better of those three variations in your act.
Hope this helps you out
