There's nothing like a toasty sandwich especially quickly put together at work in the lunchroom. A friend of mine is a guru at these, they're sort of a cross between a pizza and sandwich, theses were made on really thin lavash bread (it was almost crepe like, you have to go to middle easterns stores for this kind), but pita can be used instead.
Organic Cheddar (Trader Joes)
Provolone, sliced (Smart & Final has a great one)
Mushrooms (Pre sliced)
Lay out the Lavash and top with salami, then mushrooms,