Good Venting Is Key
Stick a magnet to a spare house key using hot glue, and tuck the key up out of sight inside the dryer vent hood. If your vent hood is aluminum or plastic, glue a magnet to the inside of the hood as well as the key. Check out our ultimate guide for finding secret hiding places in your home.
Cut out a stud space opening to fit a return air grille. Cut off the grille screws and glue just the heads in place. Run four drywall screws into the corners of the opening so they fit just inside the rim of the grille. Then glue rare earth magnets to the back of the grille so they line up with the screw heads.