Hidden storage for rifle or other interesting things.
It's true that hollow walls mostly suck. This makes them not suck.
Two tall bookshelves on their sides make great benches with built-in storage underneath::: Mud room!
If you can't tell by now I'm somewhat obsessed with storage cubbies.
Attach Ikea Spice Racks to sides of Dresser for Book Storage! Fantastic idea!
Built-In Drawers between wall studs. Imagine how much space you could save w/out dressers! Think about bathroom space.
space between studs, built in nook for purses, cell phones, mail.
Installing drawers instead of shelves in linen closet
secret room IN the stairs! I need a secret room somewhere in my house..