I have found it. This company makes bookshelves to fit in your doorway and make a secret room.
VW Pea... I WANT THIS!
The Transparent Canoe Kayak - Hammacher Schlemmer
Swedish Love Story Necklace
Duo Shower Curtain Rod 2-in-1 space-saver! Use one rod for the shower curtain, the other for towels or hang clothes to dry!