Merchandising makes up a huge revenue stream for blockbuster movies and making all that merch doesn't happen overnight.  The rights are sold off far in advance to manfucaturers and even though The Avengers isn't due out until May 4, 2012, mock-ups have already leaked out.  Collider reader Max (who also sent over the promo poster for Despicable Me 2) has sent us some mock-ups of a backpack, sweatshirt, and packaging for an Iron Man action figure for The Avengers.  These designs may not be final, but they look official and Max has been a reliable gent in the past.If you want a sneak peek at the merchandise that will likely dominate your local Target come May 2012, hit the jump.  Directed by Joss Whedon, The Avengers stars Robert Downey Jr., Chris Evans, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Mark Ruffalo, Tom Hiddleston, Cobie Smulders, and Samuel L. Jackson.  I'm hoping we'll get Avengers-branded Nick Fury eye-patches.