Curling up with a good book

Literally.  I'm not sure how comfortable it is in there for long periods of time, but it is a rather clever idea. It's called "The Cave Bookshelf" and will run you a cool $7,000* (plus shipping - from England!).  You can read more about it here.

*There is a kid's version for a mere $5,000, in case the adult version seems too pricey :)!