This one's a bit weird....
Max is right, there is something of value in the office... but it's not in plain sight
Maybe it's inside something else?
Drawers? no... Couch... no... Jimmy's rat hole... nope... how about what's in the closet?
How about, it's inside Leonard. How do you get something out of him?
Maybe force it out ... by making him barf
Those should be enough hints