A cheap and quick way to separate space in a studio apartment - use pallets and a sheet of wood over the top to create a designated living room area. Also use planks from pallet to create a wooden wall to further create a sense of a separate space.
corner gallery wall - without the specially made corner frames. Would need to be on a corner that is in an open area; this would be really overbearing in a tight hallway. But in the right space it could look amazing. Very art gallery.