Hey all, I normally eschew magic forums, but I need some help ova heah...
I have been developing a new act in which I produce a number of items from a small paper bag, all the productions are nice and clean, except for the last one, which is the pay off, I've been trying a new method left and right, and so far the problem remains unsolvable, I need more ideas to pick through, does anyone know of some good sources for producing a large solid object from a paper bag? The object itself is a fake cheeseburger, and is quite solid and freakin' heavy, it also has to be this prop, it was specially made and gaffed in japan. I've made a hold-out, loaded from behind my table, etc... need to work the brain a bit more...
any help would be much appreciated. Thanks!

If you mean something like an object to produce from, try a mirror box.

No, sources for methods, I don't need a gimmicked box, the props are set, I just need more ideas to pull from.

If you mean an ungimmicked containeer, I use a folded up grocery paper bag for the appering straw.