I read through all kinds of books, but my scientific american mag is the easiest to catch up on while on the throne.
While on this topic, I have this very relevant little book called "The Toliet Book" probably made 30 years ago and I don't know how I came in possession of it. It has all these silly drawings of different toliets probably only 20 pages. Some that come to mind are: toliet with 2 seats funneled at the bottom and on toliet paper dispensers on each side labeled his and hers; clear fish tank for the basin of water; bunch of needles on the seat with a budda and incense in the back; toilet made to look like an armchair. I loved it as a kid and I think I appreciate it even more today :)