Recessed dryer venting box: "a recessed box installed into the wall that allows you to push your dryer right up to the wall. Otherwise, you have to leave several inches between the back of the dryer and wall to make way for the bend in the flex hose."
Ikea used to sell a cabinet called the Bertby. It was made to hang on the wall (like an appendage). Oddly enough, they fit exactly between the studs in an average U.S. home. I mounted two, side by side, between studs and it looks like a handsome recessed cabinet. The picture is similar to mine, just imagine two, side by side.